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- Inch
- 5/16-18 UNC Thread Size & Type
- Bottoming Chamfer Type
- HSS Material
- Steam Oxide Coating
| Material | HSS |
| No. of Flutes | 3 |
| Spiral Point | No |
| Truncated Threads | No |
| Thread Size - Metric | 7.94 mm |
| Thread Size - Decimal | 0.3125 in |
| Operation Type | Blind Hole |
| Shank End Feature | Square |
| Thread Creation | Thread Cutting |
| Shank Size - Metric | 8.08 mm |
| Thread Limit | H3 |
| Helix Angle | 49 |
| Shank Square Width - Metric | 6.05 mm |
| Diameter - Fraction | 5/16 in |
| Interrupted Thread | No |
| Diameter - Decimal | 0.3125 in |
| Thread Size | 5/16 in |
| Shank Square Length - Metric | 9.52 mm |
| Thread Per Inch | 18 |
| Direction of Cut | Right Hand |
| Thread Length - Metric | 17.46 mm |
| Thread Type | UNC |
| Shank Square Length | 0.375 in |
| Ground Threads | Yes |
| Blank Construction | USCTI Table 302A |
| Tap Type | Machine |
| Shank Square Width | 0.238 in |
| Thread Length | 0.6875 in |
| Overall Length | 2.7188 in |
| Thread Tolerance | 2B |
| Thread Size & Type | 5/16-18 UNC |
| Chamfer Type | Bottoming |
| Weight | 0.051 LB |
