Countersunk screw ISO 10642 / DIN 7991, M 6x20, head 12 mm, hex socket 4 mm, steel 10.9, plain

This screw to ISO 10642 and DIN 7991 sits recessed in the hole with its countersunk head of 12 mm diameter and 3.7 mm height and leaves no edge in the way. Thread M 6, length 20 mm and socket width 4 mm govern the choice. The material is plain steel (black), property class 10.9.

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 10.9 for high preload forces
• a flush finish, at 3.7 mm head height no edge is left standing above the joint

Applications

It is used in conveyor technology, on running rails and scrapers where no edge may stand proud.

Standards and conformity

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