As for fastener products, the following standard conditions must be met during production to ensure the customer's utilization of fastener product quality. What are the standard conditions for fastener products? There are five main types.1, fastener product size standards: specify the basic size of

Materiais不锈钢材质C碳Si 矽Mn锰P磷S硫Ni 镍Cr 铬Mo钼Cu 铜SUSXM7 (302 HQ)Max 0.03Max 1.00Max 2.00Max 0.045Max 0.0308.00~10.0017.00~19.00—3.00~4.00SUS 304 (304 M)Max 0.08M

螺纹规格（D） Nominal Size,in.(D)牙数 Threads/ln. 应力截面积 Stress Area,Ain2.牙数 Threads/ln. 应力截面积 Stress Area,Ain2.牙数 Threads/ln. 应力截面积 Stress Area,Ain2.1/4 (0.250)200.0318 280.0364 5/16 (0.3125)180.0524 240.0580 3/18 (0.375)160.0775

Wood screws?A screw designed for a wood or a similar material, with a point, a relatively coarse thread, a thick shank, and, usually, an unthreaded portion of the shank at the head end.wood screws materialAn iron based material with a minimum of 10.5% chromium. This material is known for its corrosi