Countersunk screw ISO 10642 / DIN 7991, M 10x16, head 21 mm, hex socket 6 mm, steel 10.9, plain

The 90 degree countersunk head of this screw to ISO 10642 and DIN 7991 sinks 6.2 mm into the counterbore and finishes flush. It is made with thread M 10 and 16 mm length, the hexagon socket measures 6 mm, the head 21 mm. The data sheet names plain steel (black), property class 10.9 as the material.

Benefits

• head diameter 21 mm and head height 6.2 mm to ISO 10642, matching the standard counterbore
• hexagon socket with 6 mm width across flats for a high tightening torque in a tight space
• thread M 10 over 16 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 6.2 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 10.9.