Hexagon head bolt DIN 931 / ISO 4014, M 12x45, hexagon 19 mm, thread length 30 mm, steel 10.9, plain

A fitted joint lives from the shank, not from the thread. This hexagon head bolt M 12x45 to DIN 931 provides a plain shank of 15 mm over its 45 mm of length and moves the thread to the last 30 mm. The shear plane therefore lies in the full shank cross section. The head is 7.5 mm high and is tightened across flats of 19 mm. The bolt is made of steel of property class 10.9, plain and black.

Advantages

• Plain shank of 15 mm within 45 mm of total length, which places the shear plane in the full shank cross section instead of the thread.
• Hexagon head with 19 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 7.5 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 12x45.

Applications

Flange joints in machine building where the 15 mm shank aligns the parts against each other. Bolting of bearing blocks and brackets with a through hole in size M 12. Building of fixtures and clamping plates where the head with 19 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 19 mm to DIN 931 and 18 mm to ISO 4014. The material is steel of property class 10.9, plain and black.