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- Inch
- 1/4-20 UNC Thread Size & Type
- Bottoming Chamfer Type
- HSS Material
- Bright Coating
| Material | HSS |
| Diameter - Wire | E |
| Shank Size - Metric | 6.48 mm |
| Chamfer Type | Bottoming |
| Overall Length | 2.5 in |
| Thread Creation | Thread Cutting |
| Shank Square Length - Metric | 4.76 mm |
| Operation Type | Blind Hole |
| No. of Flutes | 4 |
| Shank Square Width | 0.11 in |
| Direction of Cut | Right Hand |
| Truncated Threads | No |
| Thread Size - Metric | 6.35 mm |
| Diameter - Decimal | 0.25 in |
| Thread Size - Decimal | 0.25 in |
| Thread Per Inch | 20 |
| Shank Square Width - Metric | 2.79 mm |
| Thread Length | 1 in |
| Thread Length - Metric | 25.4 mm |
| Thread Type | UNC |
| Thread Limit | H3 |
| Ground Threads | Yes |
| Shank End Feature | Square |
| Interrupted Thread | No |
| Spiral Point | No |
| Thread Size & Type | 1/4-20 UNC |
| Diameter - Fraction | 1/4 in |
| Thread Size | 1/4 in |
| Shank Square Length | 0.1875 in |
| Tap Type | Hand |
| Blank Construction | USCTI Table 302 |
| Weight | 0.0 LB |
