sus304 stainless steel screw button 1.materials:sus304,316,brass,aliuminum,steel 2.size:M1-M20 sus304 stainless steel step machine screw Place of Origin Guangdongshenzhen China(mainland) Brand Name ZQX Material carbon steel, stainless steel(sus304 sus302 sus316 sus410), copper, aluminum, etc. Size Threads diameter M1.4 - M20, thread lengths 3mm - 200mm Standard ISO& DIN& GB& JIS& ANSI ...