Acorn International SW-SS1234G250 Self-Tapping Stitch Screw #12 Thread High-Low Pierce Point

Metal to metal sealing self-drilling tapping screws made from C1022 steel, case hardened for roofing and siding applications. The screws join laps and stitch corner and rake trims and the ridge cap where they overlap steel. A 5/16? across flats high hat hex washer head with assembled EPDM washer offers easy driving and conforms to the metal surface for a secure and long-lasting seal. All screws are 1,000 hour salt spray test dacro coated. All Acorn International screws are packed 250 pieces in a heavy duty tear-off resealable bag, UPC coded and retail ready. All bag and carton labels are trilingual. Cartons are heavy duty cardboard of uniform size.