| Manufacturer Part Number | BI424 |
| Thread Size (Inch) | 1/4" |
| Thread Size (Decimal Inch) | 0.250" |
| Thread Size (mm) | 6.35mm |
| Threads per Inch (TPI) | 28 |
| Thread Series | UNF |
| Pitch Limit | H4 |
| Chamfer Type | Modified Bottoming |
| Chamfer Length | 2P-3P |
| Overall Length (Decimal Inch) | 2.500" |
| Overall Length (mm) | 63.50mm |
| Thread Length (Decimal Inch) | 0.354" |
| Thread Length (mm) | 8.99mm |
| Square Length (Decimal Inch) | 0.310" |
| Square Length (mm) | 7.87mm |
| Shank Diameter (Decimal Inch) | 0.255" |
| Shank Diameter (mm) | 6.48mm |
| Square Size (Decimal Inch) | 0.191" |
| Square Size (mm) | 4.85mm |
| Neck Diameter (Decimal Inch) | 0.200" |
| Neck Diameter (mm) | 5.08mm |
| Neck Length (Decimal Inch) | 1.000" |
| Neck Length (mm) | 25.40mm |
| Shank Type | Square |
| Drill Size (Decimal Inch) | 0.218" |
| Drill Size (mm) | 5.53mm |
| Connection Size (Decimal Inch) | 0.255" x 0.191" |
| Connection Size (mm) | 6.48 x 4.85mm |
| Length / Diameter | 2.5 X D |
| Usable Length (Decimal Inch) | 1.000" |
| Usable Length (mm) | 25.40mm |
| Ring Color | Blue Ring |
| Helix Angle (Degree) | 40 Degree |
| Number of Flutes | 3 |
| Coating | HardSlick |
| Material | HSS-PM |
| Blank Standard | 302A |
| Product Type | Spiral Flute Tap |
714.897.1700
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