Thread diameter (d1) | UNF 1/4, UNF 5/16, UNF 3/8, UNF 7/16, UNF 1/2, UNF 9/16, UNF 5/8, UNF 3/4, UNF 7/8, UNF 1, UNF 1.1/8, UNF 1.1/4, UNF 1.3/8, UNF 1.1/2, UNF No. 1, UNF No. 2, UNF No. 3, UNF No. 4, UNF No. 5, UNF No. 6, UNF No. 8, UNF No. 10, UNF No. 12 |
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