Screw

Standard Allen screw DIN912

The DIN 912 Allen bolt is one of the most widely used types of machine screws, featuring a cylindrical head and internal hex socket. These bolts are typically manufactured in diameters ranging from M1.6 to M64 and are available in strength grades 8.8, 10.9, or 12.9. The thread angle is 60 degrees, and the pitch can be either coarse or fine depending on the bolt size. The head diameter is generally 1.5 times the nominal thread diameter, and the head height is approximately equal to the thread diameter. For example, an M6 bolt has a head diameter of 10 millimeters and a height of 6 millimeters. Thread tolerance is defined as class 6g, ensuring precise manufacturing standards.

DIN 912 bolts are designed to transmit high torque using an Allen key while occupying minimal installation space. These bolts are commonly made of carbon or alloy steel with heat treatment and surface coatings such as phosphate, zinc plating, or black oxide to enhance corrosion resistance. The recommended tightening torque for an M10 bolt in grade 12.9 is approximately 100 newton meters. These bolts are widely used in machinery, robotics, industrial equipment, and precision mechanical assemblies. The accuracy of the internal socket ensures a secure and durable connection under both static and dynamic loads.

Grade 10.9 steel Allen screw

A steel Allen bolt grade 10.9, according to ISO 898-1, is recognized as a high-strength threaded fastener. These bolts have a nominal tensile strength of 1040 megapascals and a minimum yield strength of 940 megapascals. The material used is alloy steel, heat-treated through quenching and tempering. The thread angle is 60 degrees, and the typical thread tolerance class is 6g. They are manufactured in sizes ranging from M3 to M36, with lengths from 6 to 300 millimeters. Due to their high hardness, the recommended tightening torque for an M10 bolt in this grade is approximately 60 to 70 newton meters.

Allen bolts in grade 10.9 are commonly defined by DIN 912 or ISO 4762 standards and feature a cylindrical head with an internal hex socket. The head diameter is typically 1.5 times the nominal thread diameter. For instance, an M8 bolt has a head approximately 13 millimeters in diameter and 8 millimeters in height. Surface hardness should be between 32 and 39 HRC according to standards. These bolts are usually coated with zinc plating, phosphate, or black oxide for corrosion protection. They are widely used in automotive systems, heavy machinery, hydraulic equipment, and high-stress structural assemblies. The internal socket design allows precise installation in tight spaces.

8.8 allen cap head screw

Class 8.8 hardened Allen bolts are made from medium carbon steel and undergo heat treatment to achieve a tensile strength of 800 MPa and a yield strength of 640 MPa. These bolts are typically manufactured according to DIN 912 or ISO 4762 standards and are available in diameters from 4 to 24 millimeters and lengths from 10 to 200 millimeters. The head is designed with an internal hexagon and a 90-degree angle. Surface finishes may include plain, phosphate-coated, cold-galvanized, or black oxide for improved corrosion resistance. This type of bolt is well-suited for structural and mechanical joints that require medium to high strength.

The thread of a class 8.8 Allen bolt is metric and designed according to ISO standards, with pitch values ranging from 0.7 to 2.5 millimeters. Machining precision is maintained within a ±0.15 millimeter tolerance. After heat treatment, the surface hardness ranges between 22 and 32 HRC. These bolts provide stable performance under moderate torque and high tensile loads. They are widely used in automotive, structural steel, industrial machinery, and heavy equipment applications. Allen bolts of this grade are fastened with a hex key, ensuring a secure and durable connection.

stainless steel cap screw

Stainless steel Allen bolts are made from corrosion-resistant alloys such as A2 equivalent to 304 and A4 equivalent to 316, with tensile strengths ranging from 500 to 700 MPa. These bolts are typically manufactured in diameters from 3 to 24 millimeters and lengths from 6 to 200 millimeters. The head design features an internal hexagon with a 90-degree angle, produced according to DIN 912 or ISO 4762 standards. A2 grade is suitable for general environments, while A4 is ideal for acidic and marine conditions. The surface is available in brushed or polished finishes to enhance corrosion and rust resistance.

The threads of stainless steel Allen bolts are usually designed according to ISO standards, available in both coarse and fine pitches, and machined with ±0.1 millimeter tolerances. These bolts come in both full-thread and half-thread versions and maintain stable mechanical properties at temperatures up to 400 degrees Celsius. Surface hardness ranges from 200 to 400 Vickers and is controlled through annealing or cold working. Their use is common in food, chemical, pharmaceutical, and medical equipment industries due to their hygienic and corrosion-resistant properties.

Allen screw

The socket set screw, also known as a grub screw, is a headless fastener that is fully threaded and installed using an internal hex Allen drive. These screws are typically manufactured according to DIN 916 or ISO 4029 standards and come with flat, pointed, or cone-shaped ends to lock into shafts or mating parts. Thread diameters range from M1.6 to M24, with lengths typically between 3 and 80 millimeters. The thread angle is 60 degrees, and the thread tolerance class is usually 6g. Most set screws are made in strength class 45H or grade 14.9, offering extremely high compressive strength.

The headless design of the socket set screw allows for a flush surface after installation, securely locking the mating component in place. These screws are commonly used to fix gears, collars, or pulleys onto shafts and to prevent axial movement. The recommended tightening torque for an M6 set screw in grade 14.9 is approximately 20 to 25 newton meters. They are typically made from hardened alloy steel with a surface hardness between 45 and 53 HRC. Common finishes include black oxide or zinc plating to enhance corrosion resistance and reduce friction.

galvanized cap head screw

Galvanized Allen bolts are typically made from carbon steel grades 8.8 and 10.9, with tensile strength ranging from 800 to 1040 MPa. These bolts have diameters between 4 and 24 millimeters and lengths ranging from 10 to 200 millimeters. They 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 increases resistance to corrosion and rust in humid and industrial environments. The coating thickness ranges from 5 to 25 microns, providing long-term protection against oxidation.

The threading of galvanized Allen bolts is produced to DIN and ISO standards with a dimensional tolerance of ±0.15 millimeters. Thread pitch usually ranges from 0.7 to 2.5 millimeters and is available in both full-thread and half-thread variants. Surface hardness after heat treatment and galvanizing reaches 35 to 45 HRC, improving wear resistance and preventing plastic deformation. These bolts are widely used in construction, automotive, and industrial machinery due to their high strength and long-lasting durability, making them ideal for high-stress connections.

Hex Socket Head Cap Screw 8.8, Size M8x20

The Hex Socket Head Cap Screw 8.8, size M8x20, is made of high tensile steel with a tensile strength of 800 MPa. It features a standard M8 metric thread and a length of 20 millimeters. The screw head diameter is 13 millimeters, with a 6-millimeter internal hex depth. Its surface is coated for corrosion resistance, ensuring long-term performance in industrial and mechanical environments with moderate humidity. The internal hexagonal head design allows use with Allen wrenches and automated tools, providing fast and secure installation.

The M8x20 Allen screw follows the 8.8 strength class according to ISO 4762, making it ideal for industrial, machinery, and mechanical assembly applications. Its tensile load capacity is 6400 N, with a recommended tightening torque of approximately 25 Nm. Smooth threads reduce friction and prevent damage to nuts or connected parts. Suitable for permanent and semi-permanent connections, it is manufactured with high precision to meet international standards. Using the 8.8 Hex Socket Head Cap Screw increases equipment longevity and ensures easy maintenance.

PH2*SL6*150 screwdriver bit

The PH2*SL6*150 screwdriver bit is made from chrome-vanadium alloy steel with precise heat treatment to provide high mechanical strength and long-lasting resistance to wear and breakage. The tool has an exact length of 150 millimeters and a shaft diameter of 6.35 millimeters ¼ inch, allowing compatibility with manual, electric, and magnetic drivers. Its dual PH2 and SL6 design enables use with both Phillips and slotted screws and is manufactured according to international DIN and ISO standards to ensure uniform torque transfer and maximum screw fit.

The surface of the screwdriver bit features black phosphate coating or nickel plating, providing high resistance to corrosion and rust while optimizing tool lifespan. Surface hardness is controlled between 58 and 62 HRC, and the precision edges ensure torque transfer without slipping. The 150-millimeter long single-ended design allows easy access to deep screws and optimizes use in industrial, repair, and construction projects, enhancing user efficiency and performance.

magnetic screwdriver bit

The magnetic screwdriver bit is made from chrome-vanadium steel with precise heat treatment to provide high mechanical strength and long-lasting resistance to wear and breakage. Its standard length ranges from 25 to 150 millimeters, with a shaft diameter of 6.35 millimeters ¼ inch, ensuring full compatibility with manual, electric, and cordless drivers. The magnetic tip is designed to securely hold screws, preventing them from falling during work, and is available in flat, Phillips, and cross-head profiles manufactured according to DIN and ISO standards.

The surface of the magnetic screwdriver bit features black phosphate coating or nickel plating, providing high corrosion and rust resistance and optimizing tool lifespan. Surface hardness is controlled between 58 and 62 HRC, and precise edges ensure uniform torque transfer without slipping. The single-ended or double-ended design allows easy access to deep screws and optimizes performance in industrial, repair, and construction projects, enhancing user efficiency.

EXXON Screwdriver Bit

The EXXON screwdriver bit is made from chrome-vanadium alloy steel with advanced heat treatment to ensure high mechanical strength and wear resistance. The tool has an exact length ranging from 50 to 150 millimeters and a standard shaft diameter of 6.35 millimeters ¼ inch, allowing compatibility with manual, electric, and magnetic drivers. The tip is available in various profiles, including flat, Phillips, and cross-head, and is manufactured according to international DIN and ISO standards to ensure maximum compatibility with industrial and household screws.

The surface of the EXXON screwdriver bit features black phosphate coating or nickel plating, providing corrosion resistance and extending the tool’s service life. Its surface hardness is controlled within the 58 to 62 HRC range, and the precision edges allow uniform torque transfer without slipping. The single-ended or double-ended design optimizes usability in repair, industrial, and construction projects, maximizing user efficiency and performance.

cordless drill screwdriver bit

The cordless drill screwdriver bit is made from chrome-vanadium steel with precise heat treatment to provide high tensile strength and long-lasting resistance to wear and breakage. Its standard length ranges from 25 to 100 millimeters, with a shaft diameter of 6.35 millimeters ¼ inch, ensuring full compatibility with cordless drills, electric screwdrivers, and magnetic holders. The bit is produced in flat, Phillips, and cross-head profiles and is designed according to international DIN and ISO standards to provide maximum fit and optimal performance on screws.

The bit surface features black phosphate coating or nickel plating, enhancing corrosion and rust resistance and extending the tool’s service life. Surface hardness is controlled between 58 and 62 HRC, and precise edges ensure uniform torque transfer without slipping. Single-ended or double-ended designs allow easy access to deep screws and optimize use in repair, industrial, and construction projects, maximizing user efficiency and performance.

PH2X100 Screwdriver Bit

The PH2X100 screwdriver bit is made from chrome-vanadium alloy steel with advanced heat treatment to ensure high mechanical strength and long-lasting wear resistance. The tool has an exact length of 100 millimeters and a shaft diameter of 6.35 millimeters ¼ inch, allowing compatibility with manual, electric, and magnetic drivers. The PH2 tip is designed according to ISO 8764-1 standards, and its precise dimensions ensure maximum fit with industrial and household Phillips screws, enabling torque transfer without slipping or damaging the screw.

The surface of this screwdriver bit features black phosphate coating or nickel plating, providing high corrosion and rust resistance and extending the tool’s service life. Surface hardness is controlled between 58 and 62 HRC, and the edge design ensures uniform torque distribution. The 100-millimeter long single-ended design allows easy access to deep or confined screws, optimizing its use for industrial repairs, electronic equipment, and construction projects.

Taiwanese screwdriver bit

The Taiwanese screwdriver bit is made from chrome-vanadium steel with precise heat treatment to provide high mechanical strength and long-lasting resistance to wear and breakage. The tool length ranges from 25 to 150 millimeters, with a shaft diameter of 6.35 millimeters ¼ inch, ensuring full compatibility with manual, electric, and magnetic drivers. This screwdriver bit is available in flat, Phillips, and cross-head profiles and is designed according to international DIN and ISO standards to provide maximum fit and uniform torque transfer on industrial and household screws.

The surface of the Taiwanese screwdriver bit features black phosphate coating or nickel plating, enhancing corrosion and rust resistance and optimizing tool lifespan. Surface hardness is controlled between 58 and 62 HRC, and precise edges allow torque transfer without slipping. The single-ended or double-ended design provides easy access to deep screws and ensures optimal performance in repair, industrial, and construction projects.

RONIX screwdriver bit

The RONIX screwdriver bit is made from chrome-vanadium alloy steel with precise heat treatment to provide high mechanical strength and long-lasting resistance to wear and breakage. The tool length ranges from 50 to 150 millimeters, with a shaft diameter of 6.35 millimeters ¼ inch, ensuring full compatibility with manual, electric, and magnetic drivers. This screwdriver bit is available in flat, Phillips, and cross-head profiles and is designed according to international DIN and ISO standards to provide maximum fit and uniform torque transfer on industrial and household screws.

The surface of the RONIX screwdriver bit features black phosphate coating or nickel plating, enhancing corrosion and rust resistance and optimizing tool lifespan. Surface hardness is controlled between 58 and 62 HRC, and precise edges ensure torque transfer without slipping. The single-ended or double-ended design allows easy access to deep screws and ensures optimal performance in repair, industrial, and construction projects.

Single-Ended Slotted and Phillips Screwdriver Bit 15 cm USA Brand

The single-ended slotted and Phillips screwdriver bit 15 cm USA brand is manufactured from chrome-vanadium steel with precise heat treatment to enhance tensile strength and wear resistance. This tool has an actual length of 150 millimeters and a shaft diameter of 6.35 millimeters ¼ inch, making it compatible with magnetic, electric, and manual drivers. The dual slotted and Phillips design enables use with both flat and cross-head screws and is produced in compliance with international DIN and ISO standards.

The surface of this screwdriver bit is coated with black phosphate and nickel plating, providing corrosion resistance and extending service life in humid environments. Its surface hardness is controlled within the 58 to 62 HRC range, while the precise edges ensure uniform torque transfer without slipping. The single-ended long design with a 15-centimeter length allows easy access to deep or confined spaces, making it ideal for industrial maintenance, electronic equipment, and construction projects.

PH2*100 Screwdriver Bit

The PH2*100 screwdriver bit is made from chrome-vanadium alloy steel with precise heat treatment to provide high mechanical strength and long-lasting resistance to wear and breakage. The tool has an exact length of 100 millimeters and a shaft diameter of 6.35 millimeters ¼ inch, allowing compatibility with manual, electric, and magnetic drivers. The PH2 tip is designed according to ISO 8764-1 standards, and its precise dimensions ensure maximum fit with industrial and household Phillips screws, enabling torque transfer without slipping or damaging the screw.

The surface of the PH2*100 screwdriver bit features black phosphate coating or nickel plating, enhancing corrosion and rust resistance and optimizing tool lifespan. Surface hardness is controlled within the 58 to 62 HRC range, and precise edges ensure uniform torque transfer without slipping. The 100-millimeter long single-ended design allows easy access to deep screws and optimizes use in industrial, repair, and construction projects.

EXXON screwdriver bit

The EXXON screwdriver bit is made from chrome-vanadium alloy steel with advanced heat treatment, ensuring high mechanical strength and long-lasting resistance to wear and breakage. The bit length ranges from 50 to 150 millimeters, with a shaft diameter of 6.35 millimeters ¼ inch, allowing compatibility with manual, electric, and magnetic drivers. This tool is available in flat, Phillips, cross-head, and other international DIN and ISO standard profiles, providing maximum fit and uniform torque transfer for both industrial and household screws.

The surface of the EXXON screwdriver bit features black phosphate coating or nickel plating, enhancing corrosion and rust resistance and optimizing the tool’s service life. Surface hardness is controlled between 58 and 62 HRC, and precise edges ensure torque transfer without slipping. The single-ended or double-ended design allows easy access to deep screws and ensures optimal performance in industrial, repair, and construction projects.

PH2.SL6 screwdriver bit from EXXON tools

The PH2.SL6 screwdriver bit from EXXON tools is made from chrome-vanadium alloy steel with precise heat treatment, providing high mechanical strength and long-lasting resistance to wear and breakage. The tool has an exact length of 100 millimeters and a shaft diameter of 6.35 millimeters ¼ inch, allowing compatibility with manual, electric, and magnetic drivers. Its dual PH2 and SL6 design enables use with both Phillips and slotted screws and is manufactured according to ISO and DIN standards to ensure maximum fit and uniform torque transfer.

The surface of the EXXON screwdriver bit features black phosphate coating or nickel plating, enhancing corrosion and rust resistance and optimizing tool lifespan. Surface hardness is controlled within the 58 to 62 HRC range, and precise edges allow torque transfer without slipping. The single-ended or double-ended design provides easy access to deep screws and maximizes usability in industrial, repair, and construction projects.

PH2PH265 EXXON Screwdriver Bit

The PH2*PH2*65 EXXON screwdriver bit is made from chrome-vanadium alloy steel with precise heat treatment, providing high mechanical strength and long-lasting resistance to wear and breakage. The tool has an exact length of 65 millimeters and a shaft diameter of 6.35 millimeters ¼ inch, allowing compatibility with manual, electric, and magnetic drivers. Its double-ended PH2 design is manufactured according to ISO 8764-1 standards, ensuring maximum fit and uniform torque transfer on industrial and household Phillips screws.

The surface of the EXXON screwdriver bit features black phosphate coating or nickel plating, enhancing corrosion and rust resistance and optimizing tool lifespan. Surface hardness is controlled within the 58 to 62 HRC range, and precise edges allow torque transfer without slipping. The double-ended design provides easy access to deep screws and ensures optimal performance in industrial, repair, and construction projects.

PH2 Screwdriver Bit 5 cm USA Brand

The 5 cm PH2 screwdriver bit USA brand is manufactured from chrome-vanadium alloy steel with precise heat treatment to maximize mechanical strength and wear resistance. This tool has an actual length of 50 millimeters and a standard shaft diameter of 6.35 millimeters ¼ inch, making it compatible with manual, electric, and magnetic drivers. The PH2 Phillips tip is produced according to ISO 8764-1 standards, ensuring full compatibility with commonly used industrial and household screws.

The surface of this screwdriver bit is coated with black phosphate for corrosion resistance, providing protection against rust and extending service life. Its surface hardness is controlled within the range of 58 to 62 HRC, while the precision of the edges ensures uniform torque transfer without slipping. The single-ended design and compact 5-centimeter length make it ideal for easy use in confined spaces and for quick repairs on various equipment.

Double-Ended Phillips Screwdriver Bit 6.5 cm USA brand

The double-ended Phillips screwdriver bit 6.5 cm USA is manufactured from hardened steel alloyed with chrome and vanadium, providing high resistance against wear and breakage. With an exact length of 65 millimeters and a standard shaft diameter of 6.35 millimeters ¼ inch, it is designed to fit magnetic or electric drivers. The Phillips tip angle is produced in accordance with ISO 8764-1 international standards, ensuring maximum compatibility with both industrial and household screws.

The surface coating of the screwdriver bit features nickel plating and black phosphate, which reduces friction and increases service life. Its surface hardness is measured between 58 and 62 HRC, and the precision of the edges guarantees uniform torque transfer without slipping. The double-ended design allows continuous use in repair projects and production lines, while its lightweight construction minimizes user fatigue during extended operation.

Double-Ended Phillips Screwdriver Bit 10 cm Ph2 USA Brand

The double-ended Phillips screwdriver bit 10 cm Ph2 USA brand is made of chrome-vanadium alloy steel with controlled heat treatment to ensure durability and wear resistance. This tool has an exact length of 100 millimeters and a shaft diameter of 6.35 millimeters ¼ inch, making it compatible with both electric and manual drivers. Both ends feature a Phillips size PH2 tip in compliance with ISO 8764-1 standards, providing maximum compatibility with industrial and household screws.

The surface of this screwdriver bit is coated with black phosphate for corrosion resistance, ensuring protection against rust and extending tool life. Its surface hardness is set within the 58 to 62 HRC range, and the precision of the edges allows uniform torque transfer without slipping. The double-ended design not only offers economic efficiency but also enables long-term use in repair projects, production lines, and construction applications.

Single-Ended Slotted Screwdriver Bit 5 cm SL5 and SL6 USA Brand

The single-ended slotted screwdriver bit 5 cm SL5 and SL6 USA brand is manufactured from alloy steel containing chrome and molybdenum, ensuring strength and resistance under high pressure. The exact length of this tool is 50 millimeters with a shaft diameter of 6.35 millimeters ¼ inch, allowing compatibility with electric and magnetic drivers. The flat blade is produced according to DIN 5264 standard and covers two common sizes, SL5 and SL6, making it suitable for different screw types.

The surface of the screwdriver bit is coated with black phosphate for corrosion resistance, preventing rust and wear in heavy-duty applications. Its surface hardness is set between 58 and 60 HRC, while precise edges ensure uniform torque transfer without slipping. The single-ended flat design provides greater torque focus and makes it ideal for industrial repairs, mechanical equipment, and household applications.

8X40 stainless steel cap head screw

The Allen bolt A2 cylindrical head with size M8 and length 40 mm is manufactured from stainless steel grade A2-70, offering a tensile strength of about 700 MPa. Its approximate weight is 15 grams, and due to its 8 mm diameter and 40 mm length, it is commonly used in medium to heavy industrial joints. The thread is designed according to ISO 4762 with a 1.25 mm pitch, ensuring uniform load distribution along the threads.

In terms of corrosion resistance, the A2 Allen bolt performs well in humid and semi-corrosive environments thanks to chromium and nickel content in the alloy. It is produced in compliance with DIN 912 or ISO 4762 standards and is suitable for applications in oil and gas industries, food processing, and mechanical machinery. Stainless steel A2 naturally resists rusting, eliminating the need for additional coatings, which significantly increases the service life of the connection.

INA ball screw

Ball screw with the German INA brand is part of the large Shoffler brand, which also produces all kinds of bearings under the name of FAG and INA rolling bearings. One of the most important quality factors in the production of ball screws is the use of materials and metal alloys with high mechanical capabilities. The high technology of INA ball screw production is due to the use of steel alloys with suitable compositions and of course special heat hardening treatment which has emerged during several stages of cooling and heating. Different parts of the ball screw body with this brand are installed as a complete assembly after production and tested by laser to ensure their performance and fluidity by qualitative examination.

HIWIN ball screw

The most well-known and top producer of ball screws in the world is the American HIWIN brand. In fact, this industrial brand specializes in the production of ball screws according to the ASTM American industry standard. HIWIN brand ball screws are used in the Boeing aircraft industry, the military equipment of the United States and in the aerospace equipment of the American NASA company, which shows the quality of the products of this brand.
HIWIN ball screws are sold in two grades of alloy steel and stainless steel. HIWIN brand steel ball screw is produced by using steel carbon alloys that are hardened under heat treatment to have high load capacity and extraordinary wear resistance.

M5 pan head screw

Pan head screws are actually the type of machine screws that need to be drilled with a drill for connection. Pan head screw have a body or screw body with a fixed diameter, which is threaded as a fine thread. The name of the lentil head screw is derived from the flower screw, which is designed in the shape of a curved lens and is flat in the bottom part of the screw, which is where the flower and soul meet. At the time of connecting the 5mm M5 Pan head screw, the entire bolt remains on the work surface. The M5 steel lens head cylindrical screw connection is made by using hexagon nuts and steel washers and in some cases internally and involved in the work piece.

roofing self drill screw

A drill tip screw is actually a type of self-tapping screw that does not need to drill a hole to enter the surface. As its name suggests, the screw tip of a drill bit acts like a drill bit, and their connection is often done with a device. Drill tip screws are also known as gable screws because their hexagonal type is widely used in the connection of galvanized gable sheets. In fact, drill tip screws are produced with different types of holes, such as hexagonal holes, flanged hexagons, or flat head screws. To order and buy a gable screw, you must provide both the diameter of the screw, which is known as the screw size, and the length of the screw.

M6 allen set screw

Allen set screw is actually a fully threaded rod that has a hexagonal hole on the upper surface to connect with an Allen key. Unlike other types of industrial screws, Allen set screws do not have holes and completely sink into the work piece. The allen screw is used to connect two parts of a piece or machine, such as two parts of bearings. Allen head screws are widely used in machine building industries and are produced in sizes M3 to M16. One of the most widely used sizes of Allen set screws is the M6 ​​size, which is produced in lengths of 10 mm to 60 mm.

mdf screw dia4

Size 4 MDF screws are used to connect MDF panels in decoration and kitchen. MDF screw size 4 is actually a type of self-tapping screw that is produced with large and sharp ribs to have a high speed for connecting MDF wooden sheets. In fact, with the replacement of chipboard and many wooden structures due to the high price of wood with MDF, the use of automatic MDF screws, which are also connected using electrical devices, has been greatly expanded. Amer DF size 4 screw is produced in different lengths from 1 cm to 4 cm and with long pitch ribs.

Class 8 cap head screw

Dry Allen screws are produced in three general shapes: cylindrical head, flat head, and allen nut. The most widely used type of dry Allen screw is the cylindrical head type, which is produced according to the DIN912 standard. Class 8.8 dry allen screw with a cylindrical head, according to the standard, should be produced as a half rib with coarse ribs, but sometimes full rib examples of these screws are also produced to meet the needs of the market.

14mm ceiling screw

Ceiling screw size 14 is produced in different lengths up to 8 cm and is often used in iron and steel grades. ceiling screw 14 is produced as an automatic screw with a drill tip and does not need to be drilled with a drill for connection. Size 14 gable screws are often produced with a hex head that has a groove for connection with a double-sided wrench. However, it is also possible to connect 14 gable screws with a box wrench.