Hexagon head bolt DIN 931 / ISO 4014, M 12x140, hexagon 19 mm, shank 104 mm, steel 8.8, zinc-plated

In machine and fixture building the hexagon head bolt with shank is the standard fastener for drilled flanges. This version M 12x140 to DIN 931 carries 36 mm of thread and a plain shank of 104 mm that aligns the parts against each other. The hexagon head measures 19 mm across flats and 7.5 mm in height. The material is steel of property class 8.8 with an electroplated zinc coating.

Advantages

• Hexagon head with 19 mm across flats, so the tightening torque can be applied with an ordinary open-ended or ring spanner.
• Plain shank of 104 mm within 140 mm of total length, which places the shear plane in the full shank cross section instead of the thread.
• Thread length of 36 mm to DIN 931, sufficient for a nut and a washer in size M 12.
• Steel of property class 8.8 with an electroplated zinc coating, so the joint stays releasable in dry and occasionally damp surroundings.
• Head height of 7.5 mm keeps the overall height of the joint low.

Applications

Fixture building with repeated changeovers in size M 12x140. Bolting of tank and pipe supports in wet areas. Mounting of sheet metal structures where the head height of 7.5 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 19 mm to DIN 931 and 18 mm to ISO 4014. The material is steel of property class 8.8 with an electroplated zinc coating.