bolt

Allen bolt 5.6

Allen steel bolts are made from carbon steel in various grades such as 5.6, 8.8, and 10.9, offering tensile strength between 400 and 1040 MPa. These bolts are manufactured in diameters ranging from 3 to 30 millimeters and lengths between 8 and 250 millimeters. The standard head angle is typically 90 or 120 degrees, designed according to DIN 912, ISO 4762, and ANSI B18.3 standards. The internal hexagonal geometry of Allen bolts allows for high torque transmission. Surface hardening heat treatments increase wear resistance and mechanical durability. Coatings such as cold galvanizing, hot-dip galvanizing, or black phosphate provide corrosion protection. These bolts are fastened with Allen keys and are widely used in high-precision connections in metal industries, machinery manufacturing, and structural applications.

Allen steel bolts feature metric threads based on ISO standards and are produced in both coarse and fine thread types with manufacturing tolerances of ±0.2 millimeters. Thread profiles often conform to DIN 13 standards and are available in partial or full thread versions. Strength classes 8.8 and 10.9 are suitable for applications with high mechanical loads and repeated stress. These bolts exhibit high resistance to torsional torque and maintain their position withou

stud bolt B8M

The B8M stud bolt, manufactured according to ASTM A193 Grade B8M, is made from austenitic stainless steel Type 316 and offers excellent resistance to chloride and acidic corrosion. Its chemical composition includes 16–18% chromium, 10–14% nickel, and 2–3% molybdenum. In the annealed condition, it provides a minimum tensile strength of 75 ksi 515 MPa and a minimum yield strength of 30 ksi 205 MPa. The maximum surface hardness is 223 Brinell, and in certain cases, it can be supplied in a strain-hardened condition. B8M stud bolts are typically produced in diameters ranging from 1/4 inch to 2.5 inches with Unified 2A thread class.

The operating temperature range of the B8M stud bolt is from minus 200 to plus 550 degrees Celsius, making it ideal for use in chemical, pharmaceutical, and marine industries. Due to its high molybdenum content, it provides better resistance to chloride-rich environments such as seawater compared to B8 grade. Common applications include heat exchangers, chemical reactors, and process piping systems. These fasteners usually require no additional surface coating due to their inherent corrosion resistance. Quality control includes tensile testing, hardness testing, chemical analysis, and, when necessary, non-destructive tests such as PT or UT. B8M stu

Bolt Stadium B8

The B8 stud bolt is made from austenitic stainless steel type 304 or its equivalent and is suitable for corrosive and high-temperature environments. This stud bolt is manufactured in accordance with ASTM A193 Grade B8 and has a minimum tensile strength of 75 ksi approximately 515 MPa and a minimum yield strength of 30 ksi about 205 MPa. Its maximum surface hardness is 223 Brinell and it is typically supplied in either annealed or strain-hardened condition. The threads follow the Unified National Thread standard with a 2A class fit, and dimensional accuracy is defined by ASME B1.1. This type of stud bolt is commonly used with grade 8 stainless steel nuts and flat washers.

The operating temperature range for B8 stud bolts is from minus 195 to plus 538 degrees Celsius, making them suitable for applications with extreme thermal variations. These bolts are available in standard diameters from 1/4 inch to 2.5 inches and in various lengths upon request. Their surface offers excellent corrosion resistance without the need for additional coating. B8 stud bolts are primarily used in process equipment within the food, pharmaceutical, oil and gas, and marine industries. To ensure mechanical integrity, tensile, hardness, and when required, non-destructive tests such as PT or MPI are conduc

Steel stud bolt

Stainless steel stud bolts are made from austenitic or martensitic stainless steel and are designed for corrosive environments and varying temperature conditions. Their typical chemical composition includes 16 to 18 percent chromium, 8 to 14 percent nickel, and varying amounts of carbon and molybdenum. The tensile strength of these stud bolts usually ranges from 70 to 125 ksi approximately 480 to 860 MPa. Heat treatment involves annealing to maintain flexibility and, in some cases, tempering to increase hardness. The surface hardness of stainless steel stud bolts ranges between 200 and 300 Brinell, and common diameters are produced from 1/4 inch to 3 inches. Threads are manufactured according to ASME B1.1 standard with class 2A or 3A fits.

Operating temperatures for stainless steel stud bolts range from minus 200 to plus 600 degrees Celsius, offering stable performance and excellent corrosion resistance. Their main applications include oil, gas, petrochemical, food, and pharmaceutical industries. Surface coatings are generally unnecessary due to the inherent stainless properties of the steel. Quality control involves tensile testing, hardness testing, chemical analysis, and non-destructive tests such as PT and UT. These stud bolts are ideal for critical connections in industri

Steel stud bolt

Steel stud bolts are manufactured from carbon or alloy steel with precise chemical compositions including carbon, manganese, phosphorus, and sulfur, making them widely used in industrial connections. Depending on the grade, their tensile strength ranges from 60 to 150 ksi. Common grades like ASTM A193 B7 specify a minimum tensile strength of 125 ksi and a yield strength of 105 ksi. Threads are produced according to ASME B1.1 standard with 2A or 3A class fits and have very tight dimensional tolerances. Standard diameters range from 1/4 inch to 4 inches, and lengths can extend to several meters. Surface treatments such as black oxide or hot-dip galvanizing enhance corrosion resistance and durability.

Heat treatment for steel stud bolts includes quenching at 850 to 900 degrees Celsius followed by tempering around 600 degrees Celsius. This process improves hardness, fatigue resistance, and structural stability. Final hardness varies by grade, typically ranging from 200 to 350 Brinell or 24 to 35 Rockwell C. These stud bolts perform well in temperature ranges between minus 29 and plus 427 degrees Celsius. Quality control includes tensile testing, hardness measurement, chemical analysis, and, when required, non-destructive testing such as UT and MPI. Steel stud bolts play a critical

Stainless steel stud bolt Carbon steel stud bolt

Stainless steel stud bolts are made from corrosion-resistant alloys such as 304 or 316, typically containing 18% chromium and 8–10% nickel. This composition ensures high resistance against corrosion, rust, and chemical exposure. Their tensile strength typically ranges from 75 to 100 ksi, and they can withstand temperatures up to 870°C. These stud bolts are manufactured in compliance with international standards such as ASTM A193 B8 or B8M. Threads are available in both metric and inch sizes, and the surface undergoes precise machining. Stainless steel stud bolts are ideal for use in corrosive environments such as petrochemical plants, food processing industries, and marine applications.

Carbon steel stud bolts are produced from alloy or high-strength carbon steel, usually hardened and tempered through heat treatment. They typically provide a minimum tensile strength of 125,000 psi and a yield strength of 105,000 psi. Main alloying elements include carbon, manganese, chromium, and molybdenum. These bolts are manufactured according to ASTM A193 B7 or DIN 975 standards. The surface is often coated with zinc galvanized or Dacromet to prevent corrosion. This type of stud bolt is widely used in oil, gas, steam, and high-pressure industrial applications, especially for flange an

Flat head countersunk Allen bolt

Flat head countersunk Allen bolts are manufactured from carbon steel, alloy steel, or stainless steel and are specifically designed to sit flush with the surface of the workpiece. The countersink angle is typically 90 or 82 degrees, with diameters ranging from 3 to 20 millimeters and lengths from 8 to 120 millimeters. These bolts are produced according to DIN 7991 or ISO 10642 standards, ensuring flat geometry and full surface integration. Depending on the material, their tensile strength ranges from 500 to 1000 MPa, with common strength grades including 8.8, 10.9, or A2-70. They are tightened using an Allen key and are ideal for applications that require a smooth, flush surface without protrusions.

The thread of a flat head countersunk Allen bolt is typically metric, designed according to ISO standards with pitch values between 0.7 and 2.0 millimeters. Threads are available in both full and partial lengths, machined with a tolerance of ±0.15 millimeters. Surface finishes may include phosphate, galvanization, or polished stainless to improve corrosion resistance. Surface hardness ranges from 22 to 45 HRC for steel bolts and 200 to 400 Vickers for stainless versions. These bolts are used in aerospace, electronics, mold-making, and decorative fastening applications, allowing fo

8.8 Allen Bolt

High-strength Allen bolts, known as "dry" Allen bolts, are typically made from high-carbon steel or hardened alloys. Their tensile strength ranges from 800 to 1200 MPa, making them suitable for applications with severe mechanical loads. These bolts usually have diameters between 4 and 20 millimeters and lengths from 10 to 150 millimeters. The bolt head features an internal hexagon Allen design with a 90-degree angle, manufactured according to DIN 912 or ISO 4762 standards. Surface coatings such as chrome or nickel enhance corrosion and wear resistance. Due to their high hardness and mechanical strength, these bolts are widely used in automotive, heavy machinery, and military equipment industries.

The threading of high-strength Allen bolts is typically available in full-thread or half-thread forms, with pitch ranging from 0.7 to 2.5 millimeters based on ISO and DIN standards. Dimensional tolerances are controlled within ±0.1 millimeters, and surface hardness after heat treatment reaches 45 to 55 HRC. These bolts demonstrate significant resistance to high torsional torque and prevent plastic deformation. Thread thickness and depth are precisely engineered to ensure a secure and durable connection. High-strength Allen bolts are an ideal choice for critical applications requiring

stud bolt B16

The B16 stud bolt, manufactured in accordance with ASTM A193 Grade B16, is made from alloy steel with high chromium and molybdenum content, suitable for high-pressure applications. This stud bolt has a minimum tensile strength of 125 ksi approximately 860 MPa and a minimum yield strength of 105 ksi about 725 MPa. Its chemical composition includes up to 0.50% carbon, 0.80–1.10% chromium, and 0.15–0.25% molybdenum. B16 stud bolts are heat-treated by quenching and tempering, with a surface hardness ranging from 235 to 321 Brinell. Thread dimensions conform to ASME B1.1 with a 2A class fit and are available in diameters from 1/4 inch to 4 inches.

The operating temperature range of B16 stud bolts is from minus 29 to plus 593 degrees Celsius, making them ideal for high-temperature industrial applications. They are commonly used in power plant equipment, boilers, heat exchangers, and high-pressure steam lines. Surface finishes often include black oxide or hot-dip galvanizing to improve corrosion resistance. To ensure quality, tensile, hardness, and chemical analysis tests are conducted according to ASTM A193 requirements. Due to their high mechanical strength and thermal stability, B16 stud bolts are a reliable choice for critical connections in the energy and petrochemical ind

stud bolt B7

The B7 stud bolt is a threaded fastener made from chromium-molybdenum alloy steel ASTM A193 Grade B7, designed for high-temperature and high-pressure applications. It has a minimum tensile strength of 125 ksi approximately 860 MPa and a minimum yield strength of 105 ksi about 725 MPa. Its surface hardness ranges from 24 to 35 HRC and it is manufactured in various heat-treated classes. The B7 stud bolt typically features a Unified 2A thread and is paired with a 2H heavy hex nut. It is produced in accordance with international standards such as ASME B18.31.2 and ASTM A193, and is commonly used in oil, gas, petrochemical, and power generation industries.

The operating temperature range for a B7 stud bolt is from minus 29 to plus 427 degrees Celsius, ensuring reliable performance under extreme thermal conditions. It is available in standard diameters from 1/4 inch to 4 inches with custom lengths upon request. Surface finishes include hot-dip galvanizing or black oxide coating to enhance corrosion resistance. Dimensional tolerances are defined based on ANSI/ASME B1.1 standards. For critical applications, non-destructive tests such as UT or MPI are also performed. Due to its high strength and mechanical stability, the B7 stud bolt is recommended for high-pressure operational environ

Stud Bolt ASTM A 193 B16

ASTM A193 B16 stud bolts are made from alloy steel containing chromium, molybdenum, and vanadium, engineered to withstand high pressure and temperature conditions. This grade offers a tensile strength range of 860 to 1030 MPa and a yield strength between 690 and 860 MPa. Quench and temper heat treatment enhances both hardness and thermal resistance. The recommended operating temperature for B16 stud bolts reaches up to approximately 510°C. These bolts are manufactured in diameters from 1/4 inch to 2.5 inches, with either inch or metric threads. Thread types comply with UN or M standards and are typically used with ASTM A194 Grade 4 or 7B nuts.

The surface of B16 stud bolts is typically offered in black oxide, galvanized, or phosphate coatings to provide corrosion protection. The average density of the alloy is approximately 7.85 g/cm³, and its hardness ranges from 200 to 300 Brinell. Thread dimensional tolerances follow Class 2A standards to ensure maximum grip and structural safety. These stud bolts are used in assembling boilers, heat exchangers, high-pressure flanges, and turbines. The ASTM A193 B16 standard outlines precise chemical, mechanical, and performance requirements for high-pressure applications in petrochemical and power generation industries.

Allen bolt, grade 8.8, size M10x40

The M10x40 Allen bolt, grade 8.8, is made of hardened steel with a tensile strength of 800 MPa and complies with the 8.8 class standard. The thread diameter is 10 millimeters and the overall bolt length is 40 millimeters, providing a secure connection for medium to high load industrial applications. The internal hex socket head allows easy installation with an Allen wrench and enables assembly in confined spaces. Threads are manufactured with ISO 68-2 precision, ensuring a shear strength of 640 MPa. The bolt surface is corrosion-resistant or zinc-coated, and a dimensional tolerance of ±0.1 millimeters guarantees a stable and precise connection.

The M10x40 Allen bolt is suitable for connecting metal, plastic, and composite components in industrial and automotive structures. The thread angle is 60 degrees, with a recommended installation torque of 40 Nm and tensile load capacity of 6.1 kN. Production according to DIN 912 standard ensures dimensional uniformity and quality of the hex socket head. The bolt can be installed with a hand or socket wrench and is suitable for dry or lubricated industrial environments. Controlled hardness of HRC 32-36 and an effective thread length of 35 millimeters ensure a reliable connection and long service life of components.

Allen bolt, grade 8.8, size M10x20

The M10x20 Allen bolt, grade 8.8, is made of hardened steel with a tensile strength of 800 MPa and complies with the 8.8 class standard. The thread diameter is 10 millimeters and the overall bolt length is 20 millimeters, providing a secure connection for medium to high load applications. The internal hex socket head allows use with an Allen wrench and simplifies installation in tight spaces. Threads are manufactured with ISO 68-2 precision, ensuring a shear strength of 640 MPa. The bolt surface is corrosion-resistant or zinc-coated, with a dimensional tolerance of ±0.1 millimeters, guaranteeing high quality and durability of the connection.

The M10x20 Allen bolt is suitable for connecting metal, plastic, and composite components in industrial and automotive structures. The thread angle is 60 degrees, with a recommended installation torque of 40 Nm and a tensile load capacity of 6.1 kN. Production according to DIN 912 standard ensures dimensional uniformity and quality. The bolt can be installed with a hand or socket wrench and is suitable for dry or lubricated industrial environments. Controlled hardness of HRC 32-36 and an effective thread length of 18 millimeters guarantee a reliable connection and long service life under various working conditions.

stainless steel stud bolt

Stainless steel stud bolts are manufactured from corrosion-resistant steel grades such as 304, 316, and 321. Their chemical composition includes approximately 18% chromium and 8–10% nickel. This alloy ensures structural stability at elevated temperatures up to 870°C. The tensile strength typically ranges between 515 and 860 MPa, while yield strength falls between 205 and 520 MPa. Threads are machined to metric or inch standards, with precise tolerance classes such as 6g or 2A. Most surfaces are plain and polished, although passivated or electroplated finishes may be used in specific applications.

Stainless steel stud bolts are engineered for corrosive environments such as refineries, chemical plants, and marine applications. They show excellent resistance to sulfuric acid, chloride, and salt-laden steam. These stud bolts are usually paired with stainless steel nuts like A194 Grade 8 or A2-70. In high-pressure flange systems, Grade 316 is preferred due to its molybdenum content, offering superior resistance to pitting corrosion. Surface hardness ranges from 150 to 250 Brinell, supporting ease of installation and creep resistance. Dimensions comply with ASME B18.31.2 or DIN 976 standards, ensuring compatibility across industrial systems.

Allen bolt, grade 8.8, size M10x30

The M10x30 Allen bolt, grade 8.8, is made of hardened steel with a tensile strength of 800 MPa and complies with the 8.8 class standard. The thread diameter is 10 millimeters and the overall bolt length is 30 millimeters, providing a secure connection for medium to high load industrial applications. The internal hex socket head allows easy installation with an Allen wrench and use in confined spaces. Threads are manufactured with ISO 68-2 precision, ensuring a shear strength of 640 MPa. The bolt surface is corrosion-resistant or zinc-coated, and dimensional tolerance of ±0.1 millimeters ensures a stable and reliable connection.

The M10x30 Allen bolt is suitable for connecting metal, plastic, and composite components in industrial and automotive structures. The thread angle is 60 degrees, with a recommended installation torque of 40 Nm and tensile load capacity of 6.1 kN. Production according to DIN 912 standard ensures dimensional uniformity and quality of the hex socket head. The bolt can be installed with a hand or socket wrench and is suitable for dry or lubricated industrial environments. Controlled hardness of HRC 32-36 and an effective thread length of 25 millimeters guarantee a secure connection and long service life of components.

Allen bolt, grade 8.8, size M12x30

The M12x30 Allen bolt, grade 8.8, is made of hardened steel with a tensile strength of 800 MPa and complies with the 8.8 class standard. The thread diameter is 12 millimeters and the overall bolt length is 30 millimeters, providing a secure connection for high-load components. The internal hex socket head allows easy installation with an Allen wrench and enables assembly in confined spaces. Threads are manufactured with ISO 68-2 precision, ensuring a shear strength of 640 MPa. The bolt surface is corrosion-resistant or zinc-coated, and a dimensional tolerance of ±0.1 millimeters enhances durability and connection quality.

The M12x30 Allen bolt is suitable for connecting metal, plastic, and composite components in industrial and automotive structures. The thread angle is 60 degrees, with a recommended installation torque of 70 Nm and tensile load capacity of 8.8 kN. Production according to DIN 912 standard ensures dimensional uniformity and quality of the hex socket head. The bolt can be installed with a hand or socket wrench and is suitable for dry or lubricated industrial environments. Controlled hardness of HRC 32-36 and an effective thread length of 25 millimeters guarantee a reliable connection and long service life of components.

Allen bolt, grade 8.8, size M12x40

The M12x40 Allen bolt, grade 8.8, is made of hardened steel with a tensile strength of 800 MPa and complies with the 8.8 class standard. The thread diameter is 12 millimeters and the overall bolt length is 40 millimeters, providing a secure connection for high-load components. The internal hex socket head allows easy installation with an Allen wrench and enables assembly in confined spaces. Threads are manufactured with ISO 68-2 precision, ensuring a shear strength of 640 MPa. The bolt surface is corrosion-resistant or zinc-coated, and a dimensional tolerance of ±0.1 millimeters enhances durability and connection quality.

The M12x40 Allen bolt is suitable for connecting metal, plastic, and composite components in industrial and automotive structures. The thread angle is 60 degrees, with a recommended installation torque of 70 Nm and tensile load capacity of 8.8 kN. Production according to DIN 912 standard ensures dimensional uniformity and quality of the hex socket head. The bolt can be installed with a hand or socket wrench and is suitable for dry or lubricated industrial environments. Controlled hardness of HRC 32-36 and an effective thread length of 35 millimeters guarantee a reliable connection and long service life of components.

Heat-resistant stud bolt

Heat-resistant stud bolts are made from special stainless steel alloys or nickel-chromium alloys to maintain mechanical and chemical stability at very high temperatures. These stud bolts have tensile strengths ranging from 80 to 140 ksi 550 to 965 MPa and a minimum yield strength of 40 ksi 275 MPa. Their typical operating temperature ranges from 600 to 1100 degrees Celsius, offering excellent resistance to oxidation and thermal corrosion. Standard diameters range from 1/4 inch to 2 inches, and threads are manufactured according to ASME B1.1 standards. Surface hardness varies between 250 and 350 Brinell, and they are capable of withstanding dynamic and impact loads.

In oil, gas, petrochemical, and power industries, heat-resistant stud bolts play a critical role in connecting high-temperature equipment. The manufacturing process includes specialized heat treatments like quenching and tempering to enhance hardness and fatigue resistance. Quality control involves tensile testing, hardness testing, chemical analysis, and non-destructive tests such as UT and PT. Using these stud bolts improves safety and equipment lifespan under severe thermal conditions and they are commonly employed in thermal systems, heat exchangers, and furnaces.

Allen Bolt, Grade 8.8, Size M12x50

The M12x50 Allen bolt, grade 8.8, is made of high-strength alloy steel and is suitable for fixed and heavy-load connections. Its external thread diameter is 12 millimeters, and the total bolt length is 50 millimeters, with a standard thread pitch of 1.75 millimeters. The head features a hexagonal recess for an Allen key, and heat treatment increases surface hardness to approximately 320–380 HB. The surface is typically zinc-plated or black-coated to enhance corrosion and rust resistance. With a strength class of 8.8, the bolt can withstand tensile loads up to 800 MPa and is optimized for assembling industrial and construction metal components.

The M12x50 Allen bolt complies with ISO 4762 standards and is suitable for steel structures, machinery, and industrial equipment. Its thread diameter and standard length ensure even force distribution at the joint, preventing loosening. The recommended tightening torque is between 70 and 90 Nm to maintain mechanical performance. The hexagonal internal head allows minimal slippage when using an Allen key, ensuring fast and precise installation. High mechanical strength and hardness increase durability and safety in dynamic load conditions and various environmental situations.

Allen bolt, grade 8.8, size M8x30

The M8x30 Allen bolt, grade 8.8, is made of hardened steel with a tensile strength of 800 MPa and complies with the 8.8 class standard. The thread diameter is 8 millimeters and the overall bolt length is 30 millimeters, providing a secure connection for medium-load applications. The internal hex socket design allows use with an Allen wrench and simplifies assembly in tight spaces. Threads are produced with ISO 68-2 precision, ensuring a shear strength of 640 MPa. The bolt surface is either corrosion-resistant or zinc-coated, and dimensional tolerance is ±0.1 millimeters.

The M8x30 Allen bolt is suitable for connecting metal, plastic, and composite components in industrial and automotive structures. The thread angle is 60 degrees, with a recommended installation torque of 25 Nm and tensile load capacity of 4.9 kN. Production according to DIN 912 standard ensures dimensional uniformity and quality. The bolt can be installed with a hand or socket wrench and is suitable for dry or lubricated industrial environments. Controlled hardness of HRC 32-36 and an effective thread length of 20 millimeters guarantee a reliable connection and long service life under various working conditions.

Stainless steel Allen Bolt

Stainless steel Allen bolts are made from corrosion-resistant alloys such as A2 304 and A4 316, with tensile strengths ranging from 500 to 700 MPa. These bolts are produced in diameters from 3 to 24 millimeters and lengths from 6 to 200 millimeters, complying with DIN 912 and ISO 4762 standards. The bolt head angle is typically 90 degrees, and head types can be cylindrical or button-shaped. The surface is polished or brushed to enhance resistance against rust and wear. Due to their corrosion resistance and adequate strength, stainless steel Allen bolts are widely used in food processing, medical, marine, and chemical industries.

The threads of stainless steel Allen bolts are usually designed based on ISO standards in coarse or fine pitches, with manufacturing tolerances of ±0.1 millimeters. After heat treatment or annealing, the surface hardness ranges between 200 and 400 Vickers, providing a balanced combination of hardness and flexibility. These bolts offer high resistance to mechanical stress and environmental corrosion and are easily installed with Allen wrenches. Stainless steel Allen bolts are the ideal choice for precise applications and corrosive environments.

Galvanized stud bolt

Galvanized stud bolts are produced with a zinc coating thickness typically ranging from 50 to 100 microns to provide high resistance against corrosion and oxidation. These stud bolts are made from carbon steel with tensile strengths between 60 and 110 ksi approximately 415 to 760 MPa. Common diameters range from 1/4 inch to 2 inches with various lengths available, and threads are manufactured according to ASME B1.1 standards with class 2A or 3A accuracy. The galvanizing process can be hot-dip or electroplating, with hot-dip providing greater environmental resistance. Surface hardness after galvanizing typically ranges from 180 to 250 Brinell.

These stud bolts are widely used in oil, gas, petrochemical industries, and metal structure construction, especially in humid and corrosive environments. Quality control includes coating thickness testing, tensile testing, hardness testing, and non-destructive tests such as penetrant testing PT. Their corrosion resistance significantly increases the service life of connections and reduces maintenance costs. Using galvanized stud bolts in industrial projects improves safety and structural stability of metal frameworks.

Partially threded Allen bolt

Half-threaded Allen bolts are manufactured from carbon steel or stainless steel and feature partial threading to withstand high torsional and tensile forces. Their diameters typically range from 4 to 20 millimeters, with lengths varying between 10 and 150 millimeters. These bolts are produced according to DIN 912 or ISO 4762 standards, with common strength grades including 8.8, 10.9, and A2-70 for stainless steel. The bolt head angle is usually 90 degrees, and head types are designed as cylindrical or button heads. Surface treatments such as galvanizing or phosphating enhance corrosion resistance and extend service life.

The half-thread design means only part of the bolt’s length has threads, increasing fatigue resistance and reducing damage risk in joints. Thread pitch ranges from 0.7 to 2.5 millimeters, conforming to ISO and DIN standards. Dimensional tolerances are controlled within ±0.15 millimeters, and surface hardness improves to 35–45 HRC through heat treatment. These bolts are widely used in automotive, heavy machinery, and metal structure industries. Their half-thread structure enables more precise and stable fastening.

Galvanized Allen Bolt

Galvanized Allen bolts are typically made from carbon steel grades 8.8 and 10.9, with tensile strengths ranging from 800 to 1040 MPa. The bolt diameters vary from 4 to 24 millimeters, and lengths range between 10 and 200 millimeters. These bolts are manufactured according to DIN 912 and ISO 4762 standards and feature an internal hexagonal head with a 90-degree angle. Cold or hot-dip galvanizing coatings enhance corrosion and rust resistance in humid and industrial environments. Heat treatment improves mechanical strength and durability against dynamic and static loads.

The threads of galvanized Allen bolts are produced with precision tolerances of ±0.15 millimeters based on ISO and DIN standards. Thread pitch typically ranges from 0.7 to 2.5 millimeters and is available in full-thread or half-thread versions. Surface hardness after heat treatment and galvanizing reaches 35 to 45 HRC, providing high wear resistance and preventing plastic deformation. These bolts are widely used in construction, automotive, and industrial equipment sectors for connections requiring high strength and long-lasting durability.

Dacromet stud bolt

Dacromet stud bolts are manufactured with a corrosion-resistant coating based on metallic and non-metallic compounds, typically 8 to 12 microns thick. This coating resists rust, acids, and corrosive chemical environments, thereby extending the service life of connections. Dacromet stud bolts are generally made from carbon steel with tensile strengths ranging from 70 to 110 ksi. Common diameters range from 1/4 inch to 2 inches, and threads are produced according to ASME B1.1 standards with high precision. Surface hardness after coating ranges between 200 and 280 Brinell.

Dacromet stud bolts are widely used in oil, gas, petrochemical industries, and metal structures requiring high corrosion resistance. The Dacromet coating process involves surface preparation, coating application, and heat curing, which enhance adhesion and durability. Quality control tests include coating thickness, tensile strength, hardness, and non-destructive testing. These stud bolts, with their special anti-corrosion properties, reduce maintenance costs and ensure connection stability under harsh environmental conditions.

B7 steel stud bolt, size 5/8 inch and length 15 centimeters

The B7 steel stud bolt, size 5/8 inch and length 15 centimeters, is manufactured according to ASTM A193 standard. These bolts are made from steel with a temperature resistance of up to 450°C, making them highly suitable for flange and pipe connections. The thread diameter of 5/8 inch and length of 150 millimeters provide high mechanical strength in industrial working conditions. The hot-dip galvanized surface coating enhances corrosion and rust resistance, ensuring the durability of the connection in corrosive environments.

These stud bolts offer high tensile strength and optimized hardness to withstand mechanical pressures and heavy loads. The precise thread design allows easy assembly and disassembly without compromising connection quality. Grade B7 indicates a specific chemical composition and mechanical properties for stable performance at elevated temperatures. The galvanized B7 steel stud bolt, size 5/8 inch and 15 centimeters long, is widely used in the oil, gas, and petrochemical industries and fully complies with global standards.

Inch thread stud bolt

Inch-threaded stud bolts are typically made from carbon or alloy steel with tensile strengths ranging from 60 to 110 ksi. Their diameters vary between 1/4 inch and 2 inches, with diverse lengths available. Threads are manufactured according to ASME B1.1 standards in inch sizes, with precision classes of 2A or 3A. Surface hardness after heat treatment generally ranges from 180 to 240 Brinell. High mechanical strength and dimensional accuracy increase the service life and safety of industrial connections.

Due to their inch-thread design, these stud bolts are highly compatible with various nuts and industrial fittings. Their main applications include oil, gas, petrochemical industries, and metal structures requiring durable and precise connections. Quality control tests include tensile strength, hardness, and non-destructive testing like dye penetrant inspection to ensure product integrity. Inch-threaded stud bolts provide optimal performance under harsh environmental conditions because of their robust construction and strict standards.

B7 stud bolt

Grade B7 steel studs have a minimum tensile strength of 1050 MPa and a yield strength of 860 MPa, designed for high-pressure applications. This grade is made from chromium-molybdenum alloy steel, enhancing mechanical and thermal resistance up to 425 degrees Celsius. The thread diameter and stud length comply with ASTM A193 standards, with a surface hardness range of 240 to 280 Brinell. B7 studs can withstand high torsional and tensile loads and are widely used for pressure connections in the oil, gas, and petrochemical industries.

The manufacturing process of Grade B7 steel studs includes quenching and tempering heat treatments to achieve an optimal microstructure. This process ensures high hardness and strength, preventing premature failure. Additionally, precise control of dimensions and threads according to ASME B16.5 standards guarantees perfect compatibility with nuts and fittings. Using B7 studs increases the durability and safety of high-pressure connections, providing reliable performance under harsh environmental conditions.

Steel Stud Bolt B7 Size 58 Inch 10 Centimeters

The 5/8 inch steel stud bolt with a length of 10 centimeters is manufactured according to ASTM A193 standard and grade B7. These bolts are made from high-strength steel with a maximum temperature resistance of 450°C, designed for flange and pipe connections. The stud bolt has a thread diameter of 5/8 inch and a length of 100 millimeters, providing high mechanical strength in demanding industrial environments. The hot-dip galvanized coating enhances corrosion and rust resistance, ensuring a longer service life in humid conditions.

These stud bolts offer high tensile strength and suitable hardness to withstand mechanical loads and operational pressures. The thread design allows quick assembly and disassembly without damaging the connection quality. Grade B7 indicates a specific chemical composition and mechanical properties for stable performance at elevated temperatures. The 5/8 inch by 10-centimeter galvanized steel stud bolt is widely used in the oil, gas, and petrochemical industries and complies with global standards.

Metric thread stud bolt

Metric-thread stud bolts are typically manufactured from carbon or alloy steel with a tensile strength ranging from 70 to 120 ksi. Their diameters range between 6 to 50 millimeters and are available in various lengths. The threads are produced according to ISO 261 or DIN 13 standards with a precision class of 6g or 7g. The surface hardness after heat treatment ranges from 200 to 280 Brinell, ensuring high mechanical strength. This type of stud bolt is widely used in oil, gas, and petrochemical industries for precise and durable connections.

Due to the accurate thread geometry and high-quality raw materials, metric-thread stud bolts can withstand high pressure and industrial vibrations. The manufacturing process includes heat treatment, grinding, and strict dimensional control. Mechanical tests such as tensile strength, hardness, and non-destructive testing are conducted to ensure final quality. These stud bolts perform optimally in corrosive environments and high temperatures, offering long service life and reliability.

B7 steel stud bolt, size 5/8 inch and length 20 centimeter

The B7 steel stud bolt, size 5/8 inch and length 20 centimeters, is manufactured according to ASTM A193 standard. These bolts are made from steel with a maximum temperature resistance of 450°C, suitable for flange and pipe connections. The thread diameter of 5/8 inch and length of 200 millimeters provide high mechanical strength under harsh working conditions. The hot-dip galvanized coating increases corrosion and rust resistance, ensuring the durability of the connection in humid environments.

These stud bolts feature high tensile strength and appropriate hardness to withstand mechanical loads and operational pressures. The thread design allows quick assembly and disassembly without compromising connection quality. Grade B7 indicates a specific chemical composition and mechanical properties for stable performance at elevated temperatures. The galvanized B7 steel stud bolt, size 5/8 inch and 20 centimeters long, is widely used in the oil, gas, and petrochemical industries and complies with global standards.

Steel Stud Bolt B7 Size 1/2 Inch 10 Centimeters

The 1/2*100 inch steel stud bolt is manufactured according to ASTM A193 standard and grade B7. These bolts are made from steel with a maximum temperature resistance of 450°C, suitable for flange and pipe connections. The stud bolt has a length of 100 millimeters and a thread diameter of 1/2 inch, ensuring high mechanical strength in demanding industrial conditions. The hot-dip galvanized surface coating increases corrosion and rust resistance, extending the service life of the connection in humid and corrosive environments.

These stud bolts offer high tensile strength and appropriate hardness to withstand mechanical loads and operational pressures. The thread design allows easy assembly and disassembly without compromising connection quality. Grade B7 indicates a specific chemical composition and mechanical properties that ensure reliable performance at high temperatures. The use of 1/2*100 inch galvanized steel stud bolts is common and standard in oil, gas, and petrochemical industries.

12120 inch steel stud bolt

The 1/2\*120 inch steel stud bolt is manufactured according to ASTM A193 standard and grade B7. These bolts are made from high-strength steel with a maximum temperature resistance of 450°C, suitable for flange and pipe connections. The stud bolt length is 120 millimeters, and the thread diameter is 1/2 inch, providing enhanced mechanical strength in heavy-duty working conditions. The hot-dip galvanized surface coating increases corrosion and rust resistance, ensuring longer service life in humid environments.

These stud bolts offer high tensile strength and optimal hardness to withstand mechanical loads and operational pressures. The thread design allows easy installation and removal without compromising connection quality. Grade B7 indicates a specific chemical composition and mechanical properties for stable performance at elevated temperatures. The 1/2\*120 inch galvanized steel stud bolt is widely used and globally standardized in the oil, gas, and petrochemical industries.

M8 stainles steel allen bolt

The flat head Allen screw, which is also called the box Allen, is used in stainless steel grades with high resistance to rust and without the need for surface plating. Smaller sizes of steel flat head Allen screws are widely used in hospital machine connections and medical industries. M8 size of flat head Allen screw made of stainless steel material and grade is used in the connections of some industrial machines. This flat head screw is manufactured according to the DIN7991 standard, and it needs to create an initial hole for connection, and the diameter of the screw is fixed. The steel flat head Allen screw is produced with coarse threads and is connected to the work piece as well as with DIN934 standard hexagon steel nut.

6mm hex bolt

The 6 mm iron hex screw is produced both as a full gear according to the DIN933 standard and as a half gear according to the DIN931 standard. The 6 mm iron hex screw is made of low carbon and soft iron and is malleable. Therefore, iron screws are produced only with coarse threads. Grades 4.8 with tensile less than 400 newtons/mm2 and grade 5.6 with tensile less than 500 newtons/mm2 are the most widely used in the production of 6 mm full gear iron hex screws. Due to the low tensile strength, 6 mm iron screws are often used in industrial joints with low tensile stresses. This all-gear hexagon screw is sometimes engaged in the work piece and in most cases, it is connected with a simple DIN934 standard hexagon nut.

class 10.9 partially threaded hex bolt

Half-rib or half-thread hexagon screws are produced in two standards, one DIN931 in general and DIN6914 standard for shed and structure connections. Half rib hexagon screw in class 10.9 has a high level of carbon non-metallic element in chemical compounds, which increases the tensile strength and surface hardness of this screw grade. Tensile tensile strength of class 10.9 half-thread hexagon screw is equal to 1040 newtons/mm2, which means that this class of hexagon screw can withstand a load of 104 kg per square millimeter of the cross-sectional area at the stage of complete failure. The complex heat hardening operation has increased the mechanical capabilities of this class of half rib steel hex bolts.

M12 eye bolt

The male eye bolt size 12 is produced in G80 steel grade, and in the hot forging production method, steel with high tensile strength and heat treatment is used. The male eye bolt, which is actually an eye bolt, has a screw-shaped appendage with a diameter of 12 mm, which after the production of the rod is equipped with a machine and has coarse threads. M12 size steel male eye bolt is used for lifting all kinds of electric motors, dynamo, compressors and generators in medium sizes and it is used in single, double or quadruple in connection with chain slings and towing wire.

10 mm allen bolt

8.8 Allen bolt is produced in cylindrical head shapes according to DIN912 standard, in the form of nut in the DIN913 standard and in the flat head dry allen shape according to the DIN7991 standard. The 10 mm dry Allen screw in the shape of a cylindrical head is actually produced as a replacement for hexagon screws with greater mastery in connection and by using an Allen wrench. According to the standard, the 8.8 dry Allen screw in 10 mm size should be produced only as partially threaded, but the industrial needs have made full gear samples to be used industrially.

hv structural bolt

HV structural bolt, which is often used in sizes of 10 mm and above. Structural steel screw is also known as HV screw because it is a type of super heavy industrial screw which is produced according to DIN6914 standard. Structural steel screws are used in the size of 10 mm, 12 mm in minimum length and 120 mm in maximum length. High-carbon steel grades have been used in the production of the HV steel screw of the structure, which have been raised during the heat hardening process, which has increased the two mechanical factors, tensile and surface hardness.

1.6 tonne eye bolt

Eye bolt is actually a type of screw with an eye that is produced by hot forging method and then it is geared through industrial irons. The dynamo hook is produced in sizes M3 to M30 mm, which increases its weight capacity as the size increases. 1.6 ton eye bolt is produced in steel grade. The eye bolt is used together with chain slings and wire rope for lifting all kinds of industrial dynamo, industrial gearboxes, generators and electric generators, electric motors, electric pumps and all heavy industrial equipment.

16mm carbon steel eye bolt

Eye bolt is actually a type of screw and is also known as eye bolt in English. Male dynamo hooks are used in very small sizes from 2 mm to heavy sizes such as 36 mm in steel and steel grades.
Eye bolt has two parts, and the screw at the end is integrally connected to a ring. Male dynamo hook in steel grades is often used for lifting heavy industrial machinery such as dynamo, engine and gearbox. The type of surface ribs of dynamo hook is Coarse thread, which has the ability to suspend a higher amount of load.

carbon steel bolt size 8 mm

The hexagon screw in dry grade has the highest level of use and popularity in industries. Dry screw size 8 to 24 has a wide range of applications in industries. In fact, dry screws are produced in both hexagonal and iron shapes, and the use of aluminum samples on industrial devices is increasing. 8 mm dry hex screw is produced with class 8.8. This grade of dry screw not only has a higher carbon percentage than iron samples, but also has heat hardening treatment during production.

DIN933 hex bolt

Hex screws are produced as full thread according to DIN933 standard. All-thread hex bolts are produced in different sizes from M3 to M36 and are connected together with DIN934 simple hex nuts. Full thread hexagon screws are produced in iron grades 4.8, 5.6, dry steel grade 8.8, structural steel grade 10.9 and 12.9. The stainless steel grades of all-round hexagon screws include A2 and A4 grades, which A2 grade is made of 304 steel and A4 grade is made of 316 steel.

galvanized eye bolt

Eye bolt is produced in low iron grades, cast iron grades, and steel grades. In lifting bar, dynamo hook steel grades that are produced by hot forging method are often used. The dynamo hook is produced both in male form, which has a screw-shaped protrusion, and in female form, which has a threaded hole for connecting to the screw in lifting heavy industrial machinery.