Metal to metal sealing self-drilling tapping screws made from C1022 steel, case hardened for roofing and siding applications. The screws have a #3 drill point and are designed for 26 ga and heavier metal to join laps and to stitch corner and rake trims and the ridge cap where they overlap wall steel. A 3/8 in 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 1000 hr 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 and yellow color for better retail identity.