Stainless Steel 304/316 Hex Head Cap Bolt

At present, there are three main materials for hexagon socket screws on the market: carbon steel, stainless steel, and copper. (1) Carbon steel. We distinguish low carbon steel, medium carbon steel and high carbon steel and alloy steel by the carbon content in the carbon steel material. 1. Low carbon steel C%≤0.25% is usually called A3 steel in China. Foreign countries are basically called 1008, 1015, 1018, 1022 and so on. It is mainly used for products without hardness requirements such as grade 4.8 bolts, grade 4 nuts, and small screws (Note: 1022 material is mainly used for drilling screws). 2. Medium carbon steel 0.25% 0.45%. It is basically not used in the market at present. 3. Alloy steel: Add alloy elements to ordinary carbon steel to increase some special properties of steel: such as 35, 40 chromium molybdenum, SCM435, 10B38. Fangsheng screws mainly use SCM435 chrome-molybdenum alloy steel, the main components are C, Si, Mn, P, S, Cr, Mo. (2) Stainless steel. Performance grad…

Carbon Steel Screw Stainless Steel Screw Aluminum Cnc Part Brass Cnc Part Stainless Steel Bolt