THE ULTIMATE GUIDE TO TYPES OF SCREW HEADS

Spanner- Spanner drives have two holes in The top of the screw that locks right into a screwdriver or drill bit in the course of set up. This screw is commonly made use of to avoid tampering. Binding screws are two-aspect screws. they've got two various sides; 1 is considered a male aspect and another a woman facet. A pan head screw resem