... 2H/2HM 3.Materials: Carbon steel , Iron ASTM A194 2H Large Hex Nuts / unc hex nut Bolts: Hex Bolts, Heavy Hex Bolts ... Cap Screws , Stud Bolts, Full Thread Rods, etc.Nuts: Hex Nuts, Heavy Hex Nuts, Square Nuts, etc.Washers: Flate Washers, Ball Washers, etc. Specifications ... : Main Production Facility: Quality System: Projects Achievements: ASTM A194 2H Large Hex Nuts / unc hex nut