
ANSI B1.1 - 1982 UN NUT 1/4P 60
1/8P UN SCREW THREAD LENGTH – UP TO 3D D = NOMINAL THREAD SIZE
| THREAD SIZE | PITCH | ORDERING | L | L1 | D1 | D2 | NO. OF | |
| TPI | CODE | FLUTES |
| 1 | 0-80 | 80 | TMC03011L3 80UN | 39 | 3.9 | 3 | 1.18 | 3 | |
| 2 | 1-72 | 72 | TMC03014L5 72UN | 39 | 5.8 | 3 | 1.44 | 3 | |
| 3 | 1-72 | 72 | TMC06014L5 72UN | 57 | 5.8 | 6 | 1.44 | 3 | |
| 4 | 2-56 | 3-56 | 56 | TMC03016L6 56UN | 39 | 6.8 | 3 | 1.66 | 3 |
| 5 | 2-56 | 3-56 | 56 | TMC06016L6 56UN | 57 | 6.8 | 6 | 1.66 | 3 |
| 6 | 2-56 | 3-56 | 56 | TMCL06016L6 56UN | 100 | 6.8 | 6 | 1.66 | 3 |
| 7 | 4-40 | 40 | TMC06021L8 40UN | 57 | 8.1 | 6 | 2.12 | 3 | |
| 8 | 4-40 | 40 | TMCL06021L8 40UN | 100 | 8.1 | 6 | 2.12 | 3 | |
| 9 | 5-40 | 40 | TMC06024L9 40UN | 57 | 9.8 | 6 | 2.46 | 3 | |
| 10 | 6-32 | 6-40 | 32 | TMC06025L10 32UN | 57 | 10.7 | 6 | 2.57 | 3 |
| 11 | 6-32 | 32 | TMCL06025L10 32UN | 100 | 10.7 | 6 | 2.57 | 3 | |
| 12 | 8-32 | 32 | TMC06032L12 32UN | 57 | 12.7 | 6 | 3.22 | 3 | |
| 13 | 10-32 | 32 | TMC06037L15 32UN | 57 | 15.5 | 6 | 3.70 | 3 | |
| 14 | 10-32 | 32 | TMCL06037L15 32UN | 100 | 15.5 | 6 | 3.70 | 3 | |
| 15 | 12-28 | 28 | TMC06042L16 28UN | 57 | 16.0 | 6 | 4.20 | 3 | |
| 16 | 1/4"-28 | 28 | TMC06052L19 28UN | 57 | 19.3 | 6 | 5.20 | 3 | |
| 17 | 1/4"-28 | 28 | TMCL06052L19 28UN | 100 | 19.3 | 6 | 5.20 | 3 | |
| 18 | 5/16"-24 | 24 | TMC08066L24 24UN | 63 | 24.2 | 8 | 6.65 | 3 | |
| 19 | 1/4"-20 | 7/16"-20 | 20 | TMC06048L19 20UN | 57 | 19.4 | 6 | 4.85 | 3 |
| 20 | 1/4"-20 | 7/16"-20 | 20 | TMCL06048L19 20UN | 100 | 19.4 | 6 | 4.85 | 3 |
| 21 | 5/16"-18 | 18 | TMC06059L23 18UN | 57 | 23.0 | 6 | 5.90 | 3 | |
| 22 | 3/8"-16 | 16 | TMC08069L28 16UN | 63 | 28.5 | 8 | 6.90 | 3 |