Hexagon head bolt DIN 931 / ISO 4014, M 20x120, hexagon 30 mm, thread length 46 mm, steel 8.8, plain

More highly preloaded joints need a defined shank cross section. This hexagon head bolt M 20x120 to DIN 931 in steel of property class 8.8, plain and black offers 74 mm of plain shank and limits the thread to 46 mm. Tightening takes place on the hexagon with 30 mm across flats at a head height of 12.5 mm. The surface is plain and black.

Advantages

• Dimensions to DIN 931 and ISO 4014, so replacement and repeat orders are unambiguous through the designation M 20x120.
• Plain shank of 74 mm within 120 mm of total length, which places the shear plane in the full shank cross section instead of the thread.
• 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.
• Hexagon head with 30 mm across flats, so the tightening torque can be applied with an ordinary open-ended or ring spanner.
• Head height of 12.5 mm keeps the overall height of the joint low.

Applications

Steelwork and frame structures with through holes for M 20. Mounting of motors, gearboxes and pumps where the plain shank of 74 mm takes the shear load. Assembly of housing covers and panels with a clamping length up to 74 mm. Replacement of damaged standard bolts in size M 20x120.

Standards and conformity

The bolt is dimensioned to DIN 931 and ISO 4014. The width across flats is 30 mm to DIN 931 and 30 mm to ISO 4014. The material is steel of property class 8.8, plain and black.