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