A2 Stainless Steel UNC Heavy Hex Nuts A2 Stainless Steel UNC Heavy Hex Nuts A2 stainless steel heavy hex nuts with UNC imperial coarse threads. Available in five sizes from 5/16" to 3/4", these nuts feature a larger hexagon profile than... £0.54 (Inc. VAT) £0.45 (Ex. VAT) Choose Options Compare