Hexagon head screw DIN 933 ISO 4017, full thread, M 8x55, AF 13, plain steel 8.8

The hexagon head screw M 8x55 in plain steel with black finish, property class 8.8 joins components with a thread that reaches almost up to the head as specified in DIN 933. Load bearing thread is therefore available over the full length of 55 mm, which simplifies short clamping lengths and through bolted assemblies. Across the flats the head measures 13 mm at a head height of 5.3 mm.

Benefits

• Thread M 8 almost up to the head to DIN 933 and ISO 4017, load bearing over the length of 55 mm
• Plain surface without additional coating, the dimensions follow DIN 933 directly
• Hexagon head with 13 mm across flats to DIN and ISO for open end, ring and socket wrenches
• Short clamping lengths are possible because at 55 mm length no plain shank has to be allowed for
• Head height of 5.3 mm keeps the build height of the joint M 8x55 low

Applications

Machine and plant construction in dry surroundings, jig and tool making, bolting of gearbox and bearing housings, maintenance work on existing equipment.

Standards and conformity

Dimensions and thread design of size M 8x55 follow DIN 933 and ISO 4017. The width across flats amounts to 13 mm and is stated identically in DIN and ISO. The material is plain steel (black finish), property class 8.8.