Hexagon head screw DIN 933 ISO 4017, full thread, M 20x55, AF 30, stainless steel A4

For bolted joints to DIN 933 and ISO 4017 the version M 20x55 in stainless steel A4 is available here. The thread runs almost up to the head over the entire 55 mm, a plain shank is omitted. The hexagon with 30 mm across flats accepts open end, ring and socket wrenches, the head adds 12.5 mm of height.

Benefits

• Short clamping lengths are possible because at 55 mm length no plain shank has to be allowed for
• Hexagon head with 30 mm across flats to DIN and ISO for open end, ring and socket wrenches
• Non rusting material without additional coating, the dimensions of version M 20x55 follow DIN 933
• Stainless steel A4 for increased corrosion load such as chloride bearing surroundings

Technical data

Applications

Bolted joints under the influence of salt and chemicals, swimming pool and water technology, outdoor installations at the coast, vessel and pipework construction in stainless steel.

Standards and conformity

Dimensions and thread design of size M 20x55 follow DIN 933 and ISO 4017. The width across flats amounts to 30 mm and is stated identically in DIN and ISO. The material is stainless steel A4.