| Manufacturer Part Number | H4423 |
| Size & Pitch | 1/4-28" |
| Diameter (Decimal Inch) | 0.2500" |
| Diameter (mm) | 6.35mm |
| Overall Length (Decimal Inch) | 6.0000" |
| Overall Length (mm) | 152.40mm |
| Thread Length (Decimal Inch) | 0.3540" |
| Thread Length (mm) | 8.99mm |
| Square Length (Decimal Inch) | 0.3100" |
| Square Length (mm) | 7.87mm |
| Shank Diameter (Decimal Inch) | 0.2550" |
| Shank Diameter (mm) | 6.48mm |
| Square Size (Decimal Inch) | 0.1910" |
| Square Size (mm) | 4.85mm |
| Neck Diameter (Decimal Inch) | 0.2000" |
| Neck Diameter (mm) | 5.08mm |
| Drill Size (Decimal Inch) | 0.2175" |
| Drill Size (mm) | 5.53mm |
| Connection (Decimal Inch) | 0.255 x 0.191" |
| Connection (mm) | 6.48 x 4.85mm |
| Useable Length (Decimal Inch) | 1.0000" |
| Useable Length (mm) | 25.40mm |
| Length/Diameter | 3.0 x D |
| Number of Flutes | 3 |
| Helix Angle (Degree) | 15 Degree |
| Shank Type | Square |
| Coating | Hardslick |
| Material | P-HSS |
| Chamfer Type | Plug |
| Thread Series | UNF |
| Series | H4 |
| Pitch Limit | H3 |
| Chamfer Type | Plug |
| Chamfer Length | 4P-5P |
| Trade Name | YG Tap LH Spiral Flute |
| Coolant Through | No |
| Tap Type | Left Hand Spiral Flute |
| Blank Standard | 302A |
| Product Type | Spiral Flute Tap |
714.897.1700
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