Bolt, Nut, Customized Fastener manufacturer / supplier in China, offering ASTM A193 Gr. B7 U-Bolt with 4 Heavy Hex Nuts and 5 mm PTFE Wear Pads, DIN6921 Aluminum Scm 435 Alloy Steel Hex Head Flanged Bolt Without Grooves, M16 M20 DIN603 Zp and HDG Carriage Bolts and Hex Nuts and so on.