Specializing in the production of various types of customized machine screws, drywall screws, self drilling screws, furniture screws, welcome calls to discuss! Self drilling screws for various electrical appliances, home appliances, auto parts, furniture, machinery, furniture screws is preferred.
Semi yuan, countersunk head, mushroom head, with pad, countersunk head, plating, color plating, plating White army green, a variety of colors (can be customized)
Material: carbon steel, stainless steel
Surface treatment: black, black paint, electrophoresis, green white zinc, color zinc, zinc green environmental protection environmental protection, environmental protection zinc black, hot dip galvanized, mechanical plating, alloy plating, bright nickel, black nickel, silver, chromium, tin, copper of imitation
Self drilling screws using range: furniture screws, electronic products, machinery products, digital products, electric power equipment, electrical and mechanical products. Furniture screws is also known as wood screws, full teeth and half tooth; furniture screws according to the plating of different and is divided into many, with and without hard hard.
Self drilling screws according to the materials can be divided into: steel 1022A, stainless iron 410, stainless steel 304.
1 carbon steel self drilling screw, 1022A, standard heat treatment of steel can be used as a self drilling screw production material, after heat treatment, the surface hardness of HV560-750, the core hardness HV240-450. The common surface treatment Yi Shengxiu, high hardness, low cost.
2 stainless steel self drilling screws, 410, heat treatment, anti rust ability than carbon steel is good. Worse than stainless steel.
3 stainless steel self drilling screws, 304, not to heat treatment, anti rust capability, low hardness, high cost, can only drill aluminum, wood, plywood, commonly used for furniture screws.
4 composite self drilling screw, drill bit is made of carbon steel production, the production of 304 stainless steel head with combined thread and process.
