... ,UNC 6#-1-3/4",BSW 5/32"-2" spring lock washer standard/specialDetailed Product DescriptionFeatures:1)Standard: DIN127B,DIN7980,DIN128 ... #,65Mn4)Surface: Black,Zinc Cr+3,Yellow Zinc Cr+6,H.D.G.Packing: bulk, box packing, polybag split spring lock washers DIN127B