Countersunk screw ISO 10642 / DIN 7991, M 5x20, head 10 mm, hex socket 3 mm, steel 10.9, plain

With a countersunk head 10 mm in diameter and 3.1 mm high, this screw to ISO 10642 and DIN 7991 stays flush with the surface. It carries thread M 5 at 20 mm length and is fitted with a hexagon key of 3 mm width across flats. It is made from plain steel (black), property class 10.9.

Benefits

• head diameter 10 mm and head height 3.1 mm to ISO 10642, matching the standard counterbore
• hexagon socket with 3 mm width across flats for a high tightening torque in a tight space
• thread M 5 over 20 mm of shank length
• thread up to approximately the head, the full depth of engagement can be used
• property class 10.9 for high preload forces
• a flush finish, at 3.1 mm head height no edge is left standing above the joint

Applications

It is fitted in steel and vessel construction, on clamping strips and brackets with a countersunk hole.

Standards and conformity

The screw is made to ISO 10642 and DIN 7991. The material is stated as property class 10.9.