Countersunk screw ISO 10642 / DIN 7991, M 6x20, head 12 mm, hex socket 4 mm, steel 8.8, plain

The countersunk screw to ISO 10642 and DIN 7991 draws components together in such a way that the head, 12 mm across, disappears completely into the counterbore. Thread M 6 and shank length 20 mm set the depth of engagement, tightening is done through the hexagon socket with a width across flats of 4 mm. The stated material is plain steel (black), property class 8.8.

Benefits

• head diameter 12 mm and head height 3.7 mm to ISO 10642, matching the standard counterbore
• hexagon socket with 4 mm width across flats for a high tightening torque in a tight space
• thread M 6 over 20 mm of shank length
• thread up to approximately the head, the full depth of engagement can be used
• property class 8.8 for general mechanical engineering
• a flush finish, at 3.7 mm head height no edge is left standing above the joint

Applications

It is used in machine and plant engineering, on panels, covers and cover plates whose surface must stay flat.

Standards and conformity

The screw is made to ISO 10642 and DIN 7991. The material is stated as property class 8.8.