Allen 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

20X100 8.8 allen bolt

The quenched and tempered steel Allen bolt grade 8.8 size M20 with a length of 100 mm has an approximate weight of 0.51 kg and is manufactured according to DIN 912 standards. Its alloy composition includes 0.25–0.55% carbon, 0.5–0.8% manganese, small amounts of silicon, and less than 0.035% sulfur and phosphorus. This chemical balance improves tensile strength, enhances hardenability, and reduces brittleness under cyclic or high-stress loading.

The heat treatment process for the M20x100 Allen bolt typically involves quenching in oil or water followed by tempering at controlled temperatures. This sequence produces a martensitic structure with a surface hardness of 22–34 HRC. The tempering stage increases toughness, minimizes the risk of brittle fracture, and provides an optimized balance of hardness, strength, and ductility for industrial use.

Industrial applications of the 8.8 M20x100 Allen bolt include oil and gas facilities, heavy mining equipment, construction machinery, and steel structure assemblies. The longer length allows fastening of thicker components and supports higher axial loads. It is also widely used in machines such as hydraulic presses, industrial cranes, and heavy production lines. Protective coatings like phosphating or galvanization further extend

20X80 8.8 allen bolt

The steel Allen bolt grade 8.8 size M20 with a length of 80 mm has an approximate weight of 0.41 kg and is manufactured according to DIN 912 standards. Its chemical composition contains carbon in the range of 0.25–0.55% and sulfur below 0.035%, ensuring controlled steel quality. The proper carbon content increases tensile strength, while the low sulfur percentage prevents brittleness-related cracking and improves fatigue resistance under cyclic loading.

The M20x80 Allen bolt uses a standard right-hand metric thread with a 60-degree flank angle and a 2.5 mm pitch. This thread type ensures effective engagement and uniform stress distribution along the joint. The effective thread cross-sectional area is about 245 mm², enabling the bolt to withstand axial loads of more than 150 kN, which makes it highly suitable for demanding mechanical applications.

The industrial applications of the 8.8 M20x80 Allen bolt include oil and gas facilities, construction machinery, mining equipment, and heavy steel structures. Its extended length and high strength make it ideal for chassis connections and assemblies subjected to vibration. Additionally, protective coatings such as phosphating or galvanization are often applied to increase wear resistance and prevent corrosion in harsh operating

20X60 8.8 allen bolt

The quenched and tempered steel Allen bolt grade 8.8 size M20 with a length of 60 mm has an approximate weight of 0.31 kg and complies with DIN 912 and ISO 898 standards. Its alloy composition typically includes 0.25–0.55% carbon, 0.5–0.8% manganese, and minor amounts of silicon and phosphorus. This combination enhances mechanical strength and improves heat treatment capability, providing the necessary conditions for high tensile and shear load resistance.

The heat treatment process of the M20x60 Allen bolt involves quenching and tempering, resulting in a surface hardness of 22 to 34 HRC. Quenching forms a martensitic structure, while tempering increases toughness and reduces brittleness. The outcome is a bolt with an optimized balance of hardness and ductility, making it ideal for demanding industrial applications requiring both strength and reliability.

Industrial applications of the 8.8 M20x60 Allen bolt include oil and gas facilities, mining machinery, construction equipment, and heavy steel structures. With a 2.5 mm pitch and an effective thread cross section of 245 mm², it can withstand axial loads exceeding 150 kN. Its high resistance to vibration and cyclic loads, combined with protective coatings such as phosphating or galvanization, extends service life and e

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

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.

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.

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.

16X70 8.8 allen bolt

The steel Allen bolt grade 8.8 size M16 with a length of 70 mm has an approximate weight of 0.16 kg and is manufactured according to DIN 912 and ISO 4762 standards. With a tensile strength of 800 MPa and a yield strength of 640 MPa, it is designed for mechanical joints under heavy loading. The 70 mm length allows deeper thread engagement, increasing connection safety and stability under vibration and variable loads.

The industrial application of the 8.8 M16x70 Allen bolt is common in machinery manufacturing, hydraulic equipment, metal structures, and engine assemblies. With a 2 mm pitch and an effective thread cross section of 157 mm², it can withstand axial loads exceeding 100 kN. Its excellent torsional resistance makes it suitable for steel chassis and heavy machine frames.

In oil and gas industries as well as mining equipment, the 8.8 M16x70 Allen bolt is widely used due to its high strength and surface hardness of 22 to 34 HRC. Surface treatments such as galvanization and phosphating enhance corrosion and wear resistance, increasing the service life of the connection. These properties ensure reliable and safe performance in humid, corrosive, and cyclic load environments.

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.

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.

16X50 8.8 allen bolt

The steel Allen bolt grade 8.8 size M16×50 with a nominal diameter of 16 millimeters and length of 50 millimeters provides an ultimate tensile strength of about 800 MPa and a yield strength of around 640 MPa. Under tensile loading, it can withstand forces close to 100 to 110 kilonewtons, and with a safety factor of 3, it is suitable for industrial applications. The approximate weight of this bolt, considering the density of steel, is between 123 to 127 grams, which directly influences load calculations in mechanical and structural designs.

From a geometrical perspective, the thread pitch of this bolt in metric standard M16 is 2 millimeters, and the effective thread depth is about 1.2 to 1.3 millimeters. These dimensions ensure uniform stress distribution on the contact surface and increase the wear resistance of the connection. The internal hex design of the Allen bolt improves torque precision and allows torque application of 210 to 230 newton-meters. These characteristics make it highly effective for use in steel structures and heavy machinery.

M16X40 allen bolt 8.8

The steel Allen bolt grade 8.8 size M16X40, with a nominal diameter of 16 millimeters and a threaded length of 40 millimeters, has an ultimate tensile strength of approximately 800 MPa and a yield tensile strength of 640 MPa. Under static loading conditions, it can withstand a tensile force of about 100 to 110 kN, which is suitable for use in industrial and mechanical structures with a safety factor of 3. The approximate weight of each bolt, considering the steel density of 7.85 g/cm³, is around 98 to 102 grams.

In terms of wear resistance and tightening torque, this grade 8.8 Allen bolt can endure tightening torques of 210 to 230 Nm under dry conditions. The Working Load Limit WLL for safe operation is estimated at about 30 to 35 kN. The internal hexagon Allen design increases precision in tightening and reduces the risk of thread stripping under repeated loading. These features make it highly suitable for heavy machinery joints and high-stress steel structures.

16X60 8.8 allen bolt

The steel Allen bolt grade 8.8 M16 with a length of 60 mm has an approximate weight of 0.14 kg and complies with ISO 4017 and DIN 912 standards. This bolt features a coarse metric thread with a 2 mm pitch, which enhances joint strength under tensile and shear loads. Its tensile strength is rated at 800 MPa, and the yield strength is about 640 MPa, making it suitable for heavy industrial connections. The effective thread cross section is 157 mm², providing an axial load capacity of up to 100 kN.

The thread type of the 8.8 M16 x 60 Allen bolt is right-hand with a 60-degree flank angle, aligned with the metric system. The major diameter is 16 mm, and the minor diameter is approximately 14 mm, ensuring proper thread engagement. The surface hardness of the bolt according to standards ranges between 22 and 34 HRC, and it is commonly supplied with galvanization or phosphate coatings to improve wear resistance and corrosion protection.

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.

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.