Hexagon head bolt DIN 931 / ISO 4014, M 24x220, hexagon 36 mm, shank 147 mm, steel 8.8, zinc-plated

Large flanges and steelwork transfer their loads through a small number of heavy bolts. This hexagon head bolt M 24x220 to DIN 931 brings a shank of 147 mm and a thread of 73 mm for that purpose. The head is 15.0 mm high and measures 36 mm across flats, so a torque wrench has a safe grip. The material is steel of property class 8.8 with an electroplated zinc coating.

Advantages

• Hexagon head with 36 mm across flats, so the tightening torque can be applied with an ordinary open-ended or ring spanner.
• Plain shank of 147 mm within 220 mm of total length, which places the shear plane in the full shank cross section instead of the thread.
• Thread length of 73 mm to DIN 931, sufficient for a nut and a washer in size M 24.
• 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 15.0 mm keeps the overall height of the joint low.

Applications

Fixture building with repeated changeovers in size M 24x220. Bolting of tank and pipe supports in wet areas. Mounting of sheet metal structures where the head height of 15.0 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 36 mm to DIN 931 and 36 mm to ISO 4014. The material is steel of property class 8.8 with an electroplated zinc coating.