Home / Products / Nuts ASTM A563M Carbon and Alloy Steel Nuts (METRIC) ASTM A563M 3 ASTM A563M 4 ASTM A563M 2 1 Notes :Unit: MillimeterDimensions per :ANSI B18.2.4.6MFinish :Plain (Uncoated)Hot Dip GalvanizedRelated Product Links :ASTM A325MASTM F436M