insulation pin insulation nail thermal insulation and thermal protection applications heat insulation set welding stud insulation welding pin setmetallic clip washer, in mild steel & aluminiuminsulation pin, mild steel, copper plated304SS washer, round type, 38mm DIAplastic washer cap, white color, fit for 38mm type washermetallic insulation pin, aluminium stud, 304SS pin,all thermal insulation ...