Hexagon head bolt DIN 931 / ISO 4014, M 20x200, hexagon 30 mm, shank 148 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 20x200 to DIN 931 brings a shank of 148 mm and a thread of 52 mm for that purpose. The head is 12.5 mm high and measures 30 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 30 mm across flats, so the tightening torque can be applied with an ordinary open-ended or ring spanner.
• Plain shank of 148 mm within 200 mm of total length, which places the shear plane in the full shank cross section instead of the thread.
• Thread length of 52 mm to DIN 931, sufficient for a nut and a washer in size M 20.
• 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 12.5 mm keeps the overall height of the joint low.

Applications

Conveying and plant equipment where joints in size M 20 are undone regularly. Bolting of profile frames and cross beams over a clamping range up to 200 mm. Mounting of guide rails and stops with a fitted hole for the shank. Joints where the width across flats of 30 mm has to match the available tools.

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 with an electroplated zinc coating.