... )raw material: q235,q1952)size: from M3 to M42,1/4" to 1"3)finish:black,zinc plated,hot-dip ... ,Q235,C1035,C1045,Stainless SteelStandard:DIN/ASME/ANSISize:M3 to M48,6# to 3",can produce according to your drawingHardness:140HV,220HVSurface:Zinc ... Plated,Black,Hot Dip GalvanizedDelivery time:30days usuallyLoading port:Shanghai or Ningbo din125a flat washer