... 316L,B8,B8M etc. Our mostly products include stainless steel standard fasteners ,you can choose materials between ... flat washers,spring washers etc.Other products include stainless steel round bars,angle iron,channel bars,wire ... steel sheet etc.Our products are widely used in construction,machine,chemical produce,traffic product,and environment engineering. stainless steel DN7982 CSK TAPPING SCREWS ...