Hexagon head screw DIN 933 ISO 4017, full thread, M 8x40, AF 13, plain steel 8.8

For bolted joints in plain steel of property class 8.8 the size M 8x40 provides a continuous thread to DIN 933 and ISO 4017. The head height of 5.3 mm keeps the space needed above the component surface small.

Benefits

• Thread almost up to the head to DIN 933 and ISO 4017, load bearing thread over the full length of 40 mm
• Hexagon head with 13 mm across the flats for open end, ring and socket wrenches
• Head height of 5.3 mm limits the build height of the joint
• Property class 8.8 covers the majority of bolted joints in general mechanical engineering
• Plain surface without an added layer, so the dimensions match DIN 933 directly

Applications

Internal bolted joints in machine building, test rigs and fixtures, mounting of drive components, repair and spare part stock.

Standards and conformity

Dimensions and thread version follow DIN 933 and ISO 4017. The width across flats is 13 mm to DIN and 13 mm to ISO. The material is plain steel (black finish) of property class 8.8.