Hex flange head self drilling screw with bonded EPDM washer

Roofing Screw，Color Painted head with bonded EPDM washer

Roofing Screw，with bonded EPDM washer

Hex washer head self drilling screw with bonded EPDM washer

Hex washer head self drilling screw

Hex flange head self drilling screw with bonded EPDM washer

Roofing self drilling screw flange head

Sandwich Panel Screw Double Thread

Hex washer head self drilling screw

Roofing Screw，Flange Washer Head Double Thread