
ANSI B1.1 - 1982 UN NUT 1/4P 60
1/8P UN SCREW THREAD LENGTH – UP TO 2D D = NOMINAL THREAD SIZE
| THREAD SIZE | PITCH | ORDERING | L | L1 | D1 | D2 | NO. OF | |
| TPI | CODE | FLUTES |
| 1 | 1-72 | 72 | TMC03014L3 72UN | 39 | 3.8 | 3 | 1.44 | 3 | |
| 2 | 1-64 | 2-64 | 64 | TMC03014L3 64UN | 39 | 3.9 | 3 | 1.40 | 3 |
| 3 | 2-56 | 3-56 | 56 | TMC03016L4 56UN | 39 | 4.6 | 3 | 1.66 | 3 |
| 4 | 2-56 | 3-56 | 56 | TMC06016L4 56UN | 57 | 4.6 | 6 | 1.66 | 3 |
| 5 | 3-48 | 4-48 | 48 | TMC06018L5 48UN | 57 | 5.4 | 6 | 1.88 | 3 |
| 6 | 4-40 | 40 | TMC06021L6 40UN | 57 | 6.2 | 6 | 2.12 | 3 | |
| 7 | 5-40 | 6-40 | 40 | TMC06024L7 40UN | 57 | 7.1 | 6 | 2.46 | 3 |
| 8 | 8-36 | 36 | TMC06033L8 36UN | 57 | 8.8 | 6 | 3.31 | 3 | |
| 9 | 6-32 | 32 | TMC06025L7 32UN | 57 | 7.3 | 6 | 2.57 | 3 | |
| 10 | 8-32 | 32 | TMC06032L10 32UN | 57 | 10.1 | 6 | 3.22 | 3 | |
| 11 | 10-32 | 32 | TMC06037L10 32UN | 57 | 10.5 | 6 | 3.70 | 3 | |
| 12 | 12-28 | 28 | TMC06042L10 28UN | 57 | 10.9 | 6 | 4.20 | 3 | |
| 13 | 1/4"-28 | 28 | TMC06052L14 28UN | 57 | 14.0 | 6 | 5.20 | 3 | |
| 14 | 10-24 | 24 | TMC06035L10 24UN | 57 | 10.4 | 6 | 3.55 | 3 | |
| 15 | 5/16"-24 | 24 | TMC08066L16 24UN | 63 | 16.7 | 8 | 6.65 | 3 | |
| 16 | 1/4"-20 | 7/16"-20 | 20 | TMC06048L13 20UN | 57 | 13.7 | 6 | 4.85 | 3 |
| 17 | 7/16"-20 | 20 | TMC08079L24 20UN | 63 | 24.0 | 8 | 7.95 | 3 | |
| 18 | 5/16"-18 | 18 | TMC06059L16 18UN | 57 | 16.5 | 6 | 5.95 | 3 | |
| 19 | 5/8"-18 | 18 | TMC12119L34 18UN | 84 | 34.0 | 12 | 11.90 | 4 | |
| 20 | 3/8"-16 | 16 | TMC08069L21 16UN | 63 | 21.0 | 8 | 6.90 | 3 | |
| 21 | 7/16"-14 | 14 | TMC08079L23 14UN | 63 | 23.5 | 8 | 7.95 | 3 | |
| 22 | 1/2"-13 | 13 | TMC10093L27 13UN | 73 | 27.0 | 10 | 9.30 | 3 | |
| 23 | 9/16"-12 | 12 | TMC10099L29 12UN | 63 | 29.0 | 10 | 9.95 | 3 | |
| 24 | 5/8"-11 | 11 | TMC12115L33 11UN | 84 | 33.0 | 12 | 11.50 | 3 |