Bolt, Nut, Customized Fastener manufacturer / supplier in China, offering High Quality Sales Stock Manufacturer Price Class8.8 Grade 8.8 Black Bsw Thread A194 Grade7 Hex Head Nut, Factory Direct Price DIN ISO ASME Standard Stainless Steel Alloy Steel ASTM A193 B8 B8m 660 Grade Hex Nut, Professional Manufacturer Hot Sale DIN 934 Ss 304 A2-50 A2-70 Hexagon Hex Nut and so on.