Hexagon head bolt DIN 931 / ISO 4014, M 10x40, hexagon 17 mm, thread length 26 mm, steel 10.9, plain

A fitted joint lives from the shank, not from the thread. This hexagon head bolt M 10x40 to DIN 931 provides a plain shank of 14 mm over its 40 mm of length and moves the thread to the last 26 mm. The shear plane therefore lies in the full shank cross section. The head is 6.4 mm high and is tightened across flats of 17 mm. The bolt is made of steel of property class 10.9, plain and black.

Advantages

• Plain shank of 14 mm within 40 mm of total length, which places the shear plane in the full shank cross section instead of the thread.
• Hexagon head with 17 mm across flats, so the tightening torque can be applied with an ordinary open-ended or ring spanner.
• Property class 10.9, plain and black, suited to more highly preloaded joints in protected indoor positions.
• Head height of 6.4 mm keeps the overall height of the joint low.
• Dimensions to DIN 931 and ISO 4014, so replacement and repeat orders are unambiguous through the designation M 10x40.

Applications

Fixture building with repeated changeovers in size M 10x40. Bolting of tank and pipe supports in wet areas. Mounting of sheet metal structures where the head height of 6.4 mm is limited. Retrofitting of existing plants using the designation DIN 931.

Standards and conformity

The bolt is dimensioned to DIN 931 and ISO 4014. The width across flats is 17 mm to DIN 931 and 16 mm to ISO 4014. The material is steel of property class 10.9, plain and black.