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- Inch
- 5/16-18 UNC Thread Size & Type
- Bottoming Chamfer Type
- HSS Material
- Bright Coating
| Thread Type | UNC |
| Direction of Cut | Right Hand |
| Spiral Point | Yes |
| Shank End Feature | Square |
| Shank Square Width | 0.238 in |
| Interrupted Thread | No |
| Material | HSS |
| Chamfer Type | Bottoming |
| Thread Creation | Thread Cutting |
| Truncated Threads | No |
| Thread Tolerance | 2B |
| Diameter - Decimal | 0.3125 in |
| Thread Length | 0.69 in |
| Diameter - Fraction | 5/16 in |
| Shank Square Width - Metric | 6.05 mm |
| Thread Limit | H3 |
| Blank Construction | USCTI Table 302A |
| Shank Square Length - Metric | 9.52 mm |
| No. of Flutes | 2 |
| Ground Threads | Yes |
| Thread Length - Metric | 17.53 mm |
| Overall Length | 2.72 in |
| Shank Size - Metric | 8.08 mm |
| Operation Type | Thru-Hole |
| Thread Per Inch | 18 |
| Thread Size & Type | 5/16-18 UNC |
| Shank Square Length | 0.375 in |
| Tap Type | Machine |
| Weight | 0.3 LB |
