Brand:
Description:
The screw is made of C1022 steel with electro-galvanized coating and core hardness 320 - 410 HV, with top-layer hardness 450 - 750 MIN HV and a minimum pull-out force (concrete B25) of 2.50 KN, while the maximum rotation torque is 25.00 N m.
It has a countersunk head with ribs for a firm hold, a full, through thread (hi-low differentiated diameter) on Li, and a self-tapping tip.
The screw is intended for installing doors or windows in concrete walls.