Countersunk screw ISO 10642 / DIN 7991, M 4x30, head 8 mm, hex socket 2.5 mm, steel 8.8, zinc-plated

For flush joints this version to ISO 10642 and DIN 7991 carries thread M 4 over 30 mm of length. The countersunk head is 8 mm in diameter and 2.5 mm high, and it is turned through the hexagon socket with 2.5 mm width across flats. The material is zinc-plated steel, property class 8.8.

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 30 mm of shank length
• thread length at least 20 mm to DIN 7991
• zinc-plated surface at property class 8.8
• a flush finish, at 2.5 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.