304, 304L, 316, 316L stainless steel self drilling roofing screw with EPDM washer Professional in stainless screw 304, 304L, 316, 316L stainless steel self drilling roofing screw with EPDM washerProduct infoProfessional in stainless screwModel: Various models, also can produce according to customer's requirementLength: 13mm-150mmMaterial: 304, 304L, 316, 316L, 410Surface treatment: surface ...