Hexagon head bolt DIN 931 / ISO 4014, M 20x90, hexagon 30 mm, thread length 46 mm, steel 12.9, plain

More highly preloaded joints need a defined shank cross section. This hexagon head bolt M 20x90 to DIN 931 in steel of property class 12.9, plain and black offers 44 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 20x90.
• Plain shank of 44 mm within 90 mm of total length, which places the shear plane in the full shank cross section instead of the thread.
• Property class 12.9, the highest class offered in this family, supplied plain and black.
• 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 44 mm takes the shear load. Assembly of housing covers and panels with a clamping length up to 44 mm. Replacement of damaged standard bolts in size M 20x90.

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 12.9, plain and black.