Hexagon head screw DIN 933 ISO 4017, full thread, M 12x20, AF 19, plain steel 10.9

The 20 mm long hexagon head screw M 12x20 transfers load through a thread that reaches almost up to the head. The material plain steel with black finish, property class 10.9 determines the load capacity and the behaviour towards moisture. Across the flats the head measures 19 mm, its height comes to 7.5 mm.

Benefits

• Property class 10.9 as the characteristic value for the load capacity of the joint M 12x20
• Head height of 7.5 mm keeps the build height of the joint M 12x20 low
• Short clamping lengths are possible because at 20 mm length no plain shank has to be allowed for
• Hexagon head with 19 mm across flats to DIN and 18 mm to ISO for open end, ring and socket wrenches
• Plain surface without additional coating, the dimensions follow DIN 933 directly
• Thread M 12 almost up to the head to DIN 933 and ISO 4017, load bearing over the length of 20 mm

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 12x20 follow DIN 933 and ISO 4017. The width across flats amounts to 19 mm to DIN and 18 mm to ISO. The material is plain steel (black finish), property class 10.9.