| Manufacturer Part Number | BI643 |
| Thread Size (Inch) | 5/8" |
| Thread Size (Decimal Inch) | 0.625" |
| Thread Size (mm) | 15.88mm |
| Threads per Inch (TPI) | 11 |
| Thread Series | UNC |
| Pitch Limit | H3 |
| Chamfer Type | Modified Bottoming |
| Chamfer Length | 2P-3P |
| Overall Length (Decimal Inch) | 3.811" |
| Overall Length (mm) | 96.80mm |
| Thread Length (Decimal Inch) | 0.748" |
| Thread Length (mm) | 19.00mm |
| Square Length (Decimal Inch) | 0.560" |
| Square Length (mm) | 14.22mm |
| Shank Diameter (Decimal Inch) | 0.480" |
| Shank Diameter (mm) | 12.19mm |
| Square Size (Decimal Inch) | 0.360" |
| Square Size (mm) | 9.14mm |
| Neck Diameter (Decimal Inch) | 0.469" |
| Neck Diameter (mm) | 11.91mm |
| Neck Length (Decimal Inch) | 2.205" |
| Neck Length (mm) | 56.01mm |
| Shank Type | Square |
| Drill Size (Decimal Inch) | 0.542" |
| Drill Size (mm) | 13.78mm |
| Connection Size (Decimal Inch) | 0.480" x 0.360" |
| Connection Size (mm) | 12.19 x 9.14mm |
| Length / Diameter | 2.5 X D |
| Usable Length (Decimal Inch) | 2.205" |
| Usable Length (mm) | 56.01mm |
| Ring Color | Blue Ring |
| Helix Angle (Degree) | 40 Degree |
| Number of Flutes | 4 |
| Coating | HardSlick |
| Material | HSS-PM |
| Blank Standard | 302A |
| Product Type | Spiral Flute Tap |
714.897.1700
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