Hexagon head screw DIN 933 ISO 4017, full thread, M 4x25, AF 7, zinc plated steel 8.8

The 25 mm long hexagon head screw M 4x25 transfers load through a thread that reaches almost up to the head. The material zinc plated steel of property class 8.8 determines the load capacity and the behaviour towards moisture. Across the flats the head measures 7 mm, its height comes to 2.8 mm.

Benefits

• Short clamping lengths are possible because at 25 mm length no plain shank has to be allowed for
• Hexagon head with 7 mm across flats to DIN and ISO for open end, ring and socket wrenches
• Property class 8.8 as the characteristic value for the load capacity of the joint M 4x25
• Zinc plated surface for assemblies exposed to moisture
• Thread M 4 almost up to the head to DIN 933 and ISO 4017, load bearing over the length of 25 mm
• Head height of 2.8 mm keeps the build height of the joint M 4x25 low

Applications

Steel and equipment construction exposed to moisture, conveying technology, assembly of control cabinets and housings, mounting work in covered outdoor areas.

Standards and conformity

Dimensions and thread design of size M 4x25 follow DIN 933 and ISO 4017. The width across flats amounts to 7 mm and is stated identically in DIN and ISO. The material is zinc plated steel, property class 8.8.