... -30x20-250mm 3. certificate:ISO9001 4.material :Carbon Steel,swrch35k carbon steel hex boltcarbon steel hexboltgradestandardmaterialdiameterlengthsurfacepackagepaymentMOQ3.6(A)DIN ... :zinc, black, plain,H.D.G7) material :Carbon Steel,swrch35k,45#8)thread;BSW,BSF,UNC,UNF ... Enterprise, a member of China National Machinery General Parts Industry Association,Our product quality is accepted insurance by ...