Carriage Bolts, Fasteners, DIN603 manufacturer / supplier in China, offering Carriage Bolts (DIN603 Cl. 4.8), Square Nuts (ANSI B18.2.2 1/4"-1-1/2" Gr. 2), Flange Bolts (M5-M20 Bzp Cl. 4.8/6.8/8.8/10.9 DIN6921) and so on.
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