Hexagon head bolt DIN 931 / ISO 4014, M 20x90, hexagon 30 mm, shank 44 mm, stainless steel A2

Outdoors and in wet areas large bolts must still come loose after years. This hexagon head bolt M 20x90 to DIN 931 made of stainless steel A2 stays resistant without a coating. The plain shank measures 44 mm and the thread 46 mm. The hexagon head has 30 mm across flats and a height of 12.5 mm.

Advantages

• Hexagon head with 30 mm across flats, so the tightening torque can be applied with an ordinary open-ended or ring spanner.
• 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.
• Thread length of 46 mm to DIN 931, sufficient for a nut and a washer in size M 20.
• Stainless steel A2 stays bright under moisture and wash water, so an additional coating is not needed.
• 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 stainless steel A2.