Zinc plated steel No. 8 x 1/2 in. wafer head square drive metal piercing K-Lath screw in Invincibox™. Bit size No. 2. Package of 100.
Dottie K-Lath metal-piercing screws will tap up to 20 ga. steel studs. Square drive wafer head provides large bearing surface. Length is determined from the base of the fastener. Used for framing, electrical, plumbing and sheet metal applications.