Hangzhou Hengsheng Fasteners Co., Ltd.  

Product Name: Hex Head Self Drilling Screws Assembly with EPDM Washer Model NO.: 1/4 Grade: 4.8 Standard: DIN Head Style: Hexagonal Connection: Common Bolt Groove: Slotted Type: Hexagon Head Material: Carbon Steel Transport Package: Carton/Pallets Origin: China Prc HS Code: 7318159001 Product Description C1022 IND.HEX WASHER HEAD (A/F 3/8 )SELF DRILLING SCREWS WITH STEEL AND RUBBER WASHER Z/P