Hexagon head bolt DIN 931 / ISO 4014, M 12x140, hexagon 19 mm, thread length 30 mm, steel 8.8, plain

A fitted joint lives from the shank, not from the thread. This hexagon head bolt M 12x140 to DIN 931 provides a plain shank of 110 mm over its 140 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 8.8, plain and black.

Advantages

• Plain shank of 110 mm within 140 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.
• 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.
• 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 12x140.

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, plain and black.