6.3 x 22mm TEK STITCHING ROOFING SELF DRILL SCREWS HEX HEAD + 16mm WASHER + BIT
Washer: 16mm EPDM Bonded Washer. Zinc plated with a coarse self-tapping thread and with a tapered shank. 6.3 x 22 Stitching screws for light section steel. Shank Material: Carbon Steel. Designed For: Stitching Cladding Panels.