UNF A2 Stainless Steel Serrated Flange Nuts Thread type - UNF Grade - A2 Stainless steel Please see table below for thread sizes and pitches. ABCDE 3/16" 0.48" 3/8" 0.21" 32 1/4" 0.58" 7/16" 0.22" 28 5/16" 0.66" 1/2" 0.27" 24 3/8" 0.73" 9/16" 0... £0.31 (Inc. VAT) £0.26 (Ex. VAT) Choose Options Compare