Countersunk screw ISO 10642 / DIN 7991, M 4x6, head 8 mm, hex socket 2.5 mm, steel 8.8, plain

The 90 degree countersunk head of this screw to ISO 10642 and DIN 7991 sinks 2.5 mm into the counterbore and finishes flush. It is made with thread M 4 and 6 mm length, the hexagon socket measures 2.5 mm, the head 8 mm. The data sheet names plain steel (black), property class 8.8 as the material.

Benefits

• head diameter 8 mm and head height 2.5 mm to ISO 10642, matching the standard counterbore
• hexagon socket with 2.5 mm width across flats for a high tightening torque in a tight space
• thread M 4 over 6 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 2.5 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 8.8.