Bolt DIN 931 M8x40 8,8

Overview

The DIN 931 bolt has a hexagonal head and a partial metric thread that covers only part of the shank, leaving a smooth shank to ensure stability of the connection. It complies with strength class 8.8, which ensures high mechanical reliability and durability. The diameters of these bolts range from M6 to M36 and above, with a corresponding thread pitch that complies with metric system standards. DIN 931 bolts are ideal for applications where friction must be minimized or precision is required in connections, such as in mechanisms where stable positioning of components is important.

Technical specifications

Technical specifications for DIN 931 hexagon head bolts with partial thread:

• Nominal diameters: M1.6 – M39 mm.
• Thread pitch: standard metric, such as M3-0.5; M4-0.7; M5-0.8; M6-1.0; M8-1.25; M10-1.5; M12-1.75 and others.
• Threaded part length: for bolts with a length of L ≤ 125 mm - approximately 16-30 mm; for L between 125-200 mm and above - in accordance with the standard.
• Strength class: 8.8
• Coating: uncoated

Analogues

DIN 931 8.8 is a hexagon head bolt with partial thread, widely used in various industries due to its strength and reliability. This standard specifies the use of grade 8.8 steel, which provides high mechanical strength and resistance to loads.

Main characteristics of DIN 931 8.8:

• Material: high-quality carbon steel that meets the requirements of strength class 8.8.
• Partial thread: ensures optimal contact with the material and reduces the risk of damage during installation.
• Hexagonal head: allows the use of standard tools for tightening, which increases convenience and speed of work.
• Corrosion resistance: coating is possible, which increases durability and protects against corrosion.

Equivalents for DIN 931:

• GOST 7798-70 - corresponds to DIN 931, has a similar head type and partial metric thread.
• GOST 7805-70 - also equivalent to DIN 931 / ISO 4014.
• ISO 4014 - international standard that fully complies with the shape, thread, diameters, and lengths of DIN 931.

Areas of application

The DIN 931 bolt with a hexagonal head and partial thread has a wide range of applications due to its unique characteristics.

• In construction, this bolt is used to connect metal structures, supports, and trusses where partial threading is required to achieve a secure fit on the smooth part. Available diameters range from M12 to M24, and lengths from 40 to 200 mm, allowing adaptation to different projects.
• In mechanical engineering, DIN 931 bolts are ideal for use in joints, brackets, and housing elements, particularly in structures subject to vibration loads, ensuring stability and strength.
• In environments with aggressive atmospheres.

DIN 931 bolts combine reliability and versatility, making them indispensable in many industries.

Questions and Answers

Is it worth buying

The DIN 931 hexagon head bolt with partial thread is the ideal choice for those looking for a combination of reliability and functionality. This product is available in diameters from M6 to M36 and can be up to 300 mm long. Its strength class of 8.8 provides sufficient resistance under load, making it suitable for a variety of applications, including construction and mechanical engineering.

Where it is used

The DIN 931 hexagon head bolt with partial thread is a reliable fastener that is widely used in various industries. This bolt is ideal for connecting metal structures in construction, as well as for use in mechanical engineering where high strength is required. Thanks to its design, it ensures stability and reliability of connections under heavy loads. Available diameters range from M6 to M36, and lengths can reach up to 300 mm. Bolts of strength class 8.8 have excellent resistance to deformation, making them ideal for use in industrial and mechanical systems.