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- 1/4-20
- Straight Flute
- Plug Thread Insert Tap
| Shank Diameter | 0.318 in |
| Flute Style | Straight |
| Thread Pitch | N/A |
| Threads per Inch | 20 |
| Inch/Metric | Inch |
| Square Size | 0.238 in |
| Length of Square | 3/8 in |
| Thread Size | 1/4 |
| Tap Style | Plug |
| Thread Lead | 1 1/8 in |
| Overall Length | 2.71875 in |
| Thread Type | UNC |
| Thread Class | 3B |
| Weight | 0.1 LB |
