Stainless steel self-tapping screw thread as its common thread has a curved triangular cross-section of Qingdao, Shandong A4-80, the thread also has a high surface hardness, so when you connect, it can attack the internal screw thread in the bottom outlet is connected pieces Shandong Liaocheng thread A4-80, thereby forming a connection. This screw is characterized by a low screwing torque and high performance locking Shandong A4-80, than ordinary self-tapping screws have better job performance, and instead use machine screws. Basic Information About stainless steel self-tapping screws are used for connecting a thin metal plate (steel, saws, etc.) between. When connecting Shandong Laiwu A4-80, the first connection to be made out of thread bottom, then the self-tapping screws into the threaded bottom outlet is connected member. Because stainless steel self-tapping screw thread surface with high hardness (≥HRC45), may be tapping out the starting hole is threaded connections in order to form a connection. Stainless steel tooth lock washers - made of SUS304, Jinan Road ground spot sales company common specifications, scope of supply M2-M16 can be further processed produce drawings based on user. Common standards GB / 861.1 DIN6797J tooth lock washer stainless steel - made of SUS304, common specifications inventory online, the company's range of M2-M20 can also be customized drawings. Jinan Road ground common standards GB / T862.1 DIN6797A Qingdao, Shandong A4-80 | Jinan Road ground (certified) | A4-80 provided by Jinan Shandong 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 customer needs. Jinan Road ground in leadership with the staff warmly welcome all inquiries negotiations to create Jinan Daoqin a better future.