NutChina ASME B18.2.2 A194 2h 2hm 4 7 8m A563 Dh HDG Oversized Heavy Duty Hex Nut Black Hex Nut with A325 Hex Bolt, Find details about China A194 2h Hex Nut, A563 from ASME B18.2.2 A194 2h 2hm 4 7 8m A563 Dh HDG Oversized Heavy Duty Hex Nut Black Hex Nut with A325 Hex Bolt