Hexagon head bolt DIN 931 / ISO 4014, M 5x40, hexagon 8 mm, thread length 16 mm, stainless steel A2

In damp surroundings the material decides whether a joint can still be undone years later. This hexagon head bolt M 5x40 to DIN 931 is made of stainless steel A2 and needs no additional protective coating. The head is 3.5 mm high and is gripped across flats of 8 mm. The thread runs over 16 mm and the plain shank measures 24 mm.

Advantages

• Thread length of 16 mm to DIN 931, sufficient for a nut and a washer in size M 5.
• Plain shank of 24 mm within 40 mm of total length, which places the shear plane in the full shank cross section instead of the thread.
• Head height of 3.5 mm keeps the overall height of the joint low.
• Hexagon head with 8 mm across flats, so the tightening torque can be applied with an ordinary open-ended or ring spanner.
• Stainless steel A2 stays bright under moisture and wash water, so an additional coating is not needed.

Applications

Flange joints in machine building where the 24 mm shank aligns the parts against each other. Bolting of bearing blocks and brackets with a through hole in size M 5. Building of fixtures and clamping plates where the head with 8 mm across flats must stay freely accessible. Releasable joints that are opened several times for maintenance.

Standards and conformity

The bolt is dimensioned to DIN 931 and ISO 4014. The width across flats is 8 mm to DIN 931 and 8 mm to ISO 4014. The material is stainless steel A2.