Metric
T-slot nuts are essential for CNC milling tables and aluminum profile systems (like 2020 or 4040 extrusions). The "Slot Width" is the most important variable here.
| Thread Designation | Slot Width (mm) | Base Width (mm) | Total Height (mm) | Thread Pitch (mm) |
|---|---|---|---|---|
| M2 | 3.0 | 6.0 | 4.5 | 0.40 |
| M3 | 4.0 | 7.0 | 5.0 | 0.50 |
| M4 | 5.0 | 9.0 | 6.5 | 0.70 |
| M5 | 6.0 | 10.0 | 8.0 | 0.80 |
| M6 | 8.0 | 13.0 | 10.0 | 1.00 |
| M8 | 10.0 | 15.0 | 12.0 | 1.25 |
| M10 | 12.0 | 18.0 | 14.0 | 1.50 |
| M12 | 14.0 | 22.0 | 16.0 | 1.75 |
| M16 | 18.0 | 28.0 | 20.0 | 2.00 |
| M20 | 22.0 | 35.0 | 28.0 | 2.50 |
| M22 | 24.0 | 40.0 | 32.0 | 2.50 |
| M24 | 28.0 | 44.0 | 36.0 | 3.00 |
Imperial
Standardized for American machine tool tables. The "Slot Width" is the key measurement for the T-track.
| Thread Designation | Slot Width (in) | Base Width (in) | Total Height (in) | Threads Per Inch (TPI) |
|---|---|---|---|---|
| #2-56 | 1/8" | 1/4" | 3/16" | 56 |
| #4-40 | 5/32" | 5/16" | 1/4" | 40 |
| #6-32 | 3/16" | 3/8" | 5/16" | 32 |
| #8-32 | 1/4" | 7/16" | 3/8" | 32 |
| #10-24 | 5/16" | 1/2" | 3/8" | 24 |
| 1/4"-20 | 3/8" | 5/8" | 1/2" | 20 |
| 5/16"-18 | 7/16" | 11/16" | 9/16" | 18 |
| 3/8"-16 | 1/2" | 7/8" | 5/8" | 16 |
| 1/2"-13 | 5/8" | 1-1/8" | 3/4" | 13 |
| 5/8"-11 | 3/4" | 1-1/4" | 1" | 11 |
| 3/4"-10 | 1" | 1-1/2" | 1-1/4" | 10 |
| 7/8"-9 | 1-1/8" | 1-3/4" | 1-1/2" | 9 |
| 1"-8 | 1-1/4" | 2" | 1-3/4" | 8 |