Stainless steel cross recessed pan head self tapping screws for fastening sheet metal or non-metallic material connection Qingdao, Shandong A4-70, do not hit the bottom hole and tapping in the teeth when used directly with the tool can be screwed into the lock products. Stainless steel self-tapping screws in the drill cuttings out of the matrix no teeth. Because stainless steel self-tapping screw thread and general different, Weihai, Shandong A4-70, pointy head for Linyi, Shandong A4-70, teeth from relatively large, with no crumbs bit like wire tapping, tapping can not be directly screwed into metal This method is commonly used with plastic connection. Stainless Steel Phillips pan head self tapping screws a lot of cash sales. Standard: GB / T845 DIN7981 Stainless steel all-metal lock nut "Details Surface Treatment without treatment product grade A height of eight categories of stainless steel screw fastening nut all metal locknuts M4M5M6M8M10M12M14M16 brand Sunchime stainless steel all-metal locking nut samples Spot Spot standard number or other material grade A2-70 stainless steel edge width 16 all-metal locknuts Yantai, Shandong A4-70, Jinan Road ground (certified), provided by the Jinan Shandong A4-70 Daoqin Trading Company Jinan Daoqin Trading Company (www.daoqinshangmao.com) (www.daoqinshangmao.com) Shandong Jinan, hardware accessories leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs leadership in Jinan Road ground staff warmly welcome all inquiries negotiations to create Jinan Daoqin a better future.