Hexagon head bolt DIN 931 / ISO 4014, M 8x100, hexagon 13 mm, thread length 22 mm, steel 8.8, plain

A fitted joint lives from the shank, not from the thread. This hexagon head bolt M 8x100 to DIN 931 provides a plain shank of 78 mm over its 100 mm of length and moves the thread to the last 22 mm. The shear plane therefore lies in the full shank cross section. The head is 5.3 mm high and is tightened across flats of 13 mm. The bolt is made of steel of property class 8.8, plain and black.

Advantages

• Dimensions to DIN 931 and ISO 4014, so replacement and repeat orders are unambiguous through the designation M 8x100.
• Plain shank of 78 mm within 100 mm of total length, which places the shear plane in the full shank cross section instead of the thread.
• Steel of property class 8.8, left plain and black, which means no coating thickness on the thread and an exact fit in the hole.
• Hexagon head with 13 mm across flats, so the tightening torque can be applied with an ordinary open-ended or ring spanner.
• Head height of 5.3 mm keeps the overall height of the joint low.

Applications

Flange joints in machine building where the 78 mm shank aligns the parts against each other. Bolting of bearing blocks and brackets with a through hole in size M 8. Building of fixtures and clamping plates where the head with 13 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 13 mm to DIN 931 and 13 mm to ISO 4014. The material is steel of property class 8.8, plain and black.