Countersunk screw ISO 10642 / DIN 7991, M 10x30, head 21 mm, hex socket 6 mm, steel 8.8, plain

This screw to ISO 10642 and DIN 7991 sits recessed in the hole with its countersunk head of 21 mm diameter and 6.2 mm height and leaves no edge in the way. Thread M 10, length 30 mm and socket width 6 mm govern the choice. The material is plain steel (black), property class 8.8.

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 30 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 6.2 mm head height no edge is left standing above the joint

Applications

Its place is in furniture and shopfitting, on fittings and hinges that have to sit flush.

Standards and conformity

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