Walter-Prototyp - 1/4-20 UNC, 3 Flute, 45° Helix, Modified Bottoming Chamfer, Bright Finish, Cobalt Spiral Flute STI Tap - Right Hand Flute, 3.5433" OAL, 0.315" Shank Diam, 0.4724" Thread Length, 3B Class of Fit, Series P225099
Item #: 36358323
Brand: Walter-Prototyp
Model #: 6244686
Exact Tooling IR#: 04
Features and Benefits
Modified bottoming chamfers are similar to bottoming chamfers, but they are longer and have more teeth. They are used for threading blind holes and have 2 to 2-1/2 threads.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
| Product Specifications | |
|---|---|
| Thread Size (Inch) | 1/4-20 |
| Class of Fit | 3B |
| Number of Flutes | 3 |
| Chamfer | Modified Bottoming |
| Finish/Coating | Bright |
| Overall Length (Decimal Inch) | 3.5433 |
| Overall Length (mm) | 90.00 |
| Helix Angle | 45 |
| Thread Standard | UNC |
| Material | Cobalt |
| Flute Direction | Right Hand |
| Thread Length (Decimal Inch) | 0.4724 |
| Thread Length (mm) | 12.00 |
| Series/List | P225099 |
| Shank Diameter (Decimal Inch) | 0.3150 |
| Shank Diameter (mm) | 8.00 |
| Material Application | Aluminum; Cast Steel; Fiber Reinforced Plastics; Graphite; Non-Ferrous Metals; Plastics; Steel |
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