Hexagon head bolt DIN 931 / ISO 4014, M 12x55, hexagon 19 mm, shank 25 mm, stainless steel A4

Plants that are washed down regularly call for resistant fasteners. This hexagon head bolt M 12x55 to DIN 931 made of stainless steel A4 meets that requirement without any coating. Of the 55 mm total length, 30 mm are threaded and 25 mm stay plain. The hexagon with 19 mm across flats can still be engaged after a long service life.

Advantages

• Head height of 7.5 mm keeps the overall height of the joint low.
• Thread length of 30 mm to DIN 931, sufficient for a nut and a washer in size M 12.
• Stainless steel A4 also withstands chloride-bearing water, which suits outdoor positions and areas close to cleaning agents.
• Plain shank of 25 mm within 55 mm of total length, which places the shear plane in the full shank cross section instead of the thread.
• Hexagon head with 19 mm across flats, so the tightening torque can be applied with an ordinary open-ended or ring spanner.

Applications

Steelwork and frame structures with through holes for M 12. Mounting of motors, gearboxes and pumps where the plain shank of 25 mm takes the shear load. Assembly of housing covers and panels with a clamping length up to 25 mm. Replacement of damaged standard bolts in size M 12x55.

Standards and conformity

The bolt is dimensioned to DIN 931 and ISO 4014. The width across flats is 19 mm to DIN 931 and 18 mm to ISO 4014. The material is stainless steel A4.