Prevailing torque type hex lock nuts with polyamide insert, with UNF thread, ANSI B18.2.2
d1 | 1/4” | 5/16” | 3/8” | 7/16” | 1/2” | 5/8” | 3/4” | 7/8” | 1” |
---|---|---|---|---|---|---|---|---|---|
# threads/inch | 28 | 24 | 24 | 20 | 20 | 18 | 16 | 14 | 12 |
hmax | 9 | 9.5 | 12 | 13 | 14 | 18 | 22 | 28 | 28 |
hmin | 6 | 7 | 8 | 10 | 11 | 16 | 18 | 22 | 24 |
s | 11.2 | 12.8 | 14.4 | 16 | 19.1 | 24 | 27.1 | 32 | 36.6 |