... : M3-M56, UNC 6#-2", BSW 3/16"-2" length: 1000-3000mm,3-12 feet 3) Material: stainless steel, low carbon steel, carbon steel ... , alloy steel 4) Surface: Plain, Black, Zinc Cr+3,Yellow Zin ... /nuts/rods etc.But also deal in all of fasteners incl,carbon steel,stainless steel bolts,nuts,rods,washers,screws,anchors,nails ...