A2 STAINLESS STEEL UNC THREAD HEAVY HEX NUTS A2 Stainless steel. UNC Thread (Coarse) Type - Heavy hex nut (Extra large spanner size) ABCD 1/2 0.86" 0.48" 13 3/4 1.22" 0.72" 10 3/8 0.67" 0.35" 16 5/16 0.55" 0.29" 18 5/8 1.04" 0.59" 11 Please... £0.54 (Inc. VAT) £0.45 (Ex. VAT) Choose Options Compare