Zinc plated steel No. 10 x 1 1/4 in. self drilling pan head square drive screws in Invincibox™. Bit size No. 2. Package of 100.
Dottie self-drilling square drive pan head screws drill a hole and tap threads in one operation. The drilling operation removes metal and can be used with heavier gauge metals. Length is determined from the base of the fastener head.