Olympic Roundhead Square-Lok Self Tapping Screw is made of fully hardened steel with bright zinc-plated finish. The square recess allows greater torque and a more positive fastening than conventional cross and slotted screws. This twin thread screw is ideal for hardwood, softwood, chipboard and fibreboards.

• · One handed operation
• · Shank grips the wood and reduces splitting
• · Ideal for hardwood, softwood, chipboard and fibreboards
• · Bright zinc plated