OSG - 1/4-20 UNC, 3 Flute, 50° Helix, Semi-Bottoming Chamfer, Bright Finish, High Speed Steel Spiral Flute STI Tap - Right Hand Flute, 2-23/32" OAL, 0.318" Shank Diam, 0.311" Thread Length, 2B Class of Fit, Series 13039
Item #: 49265341
Brand: OSG
Model #: 1303900600
Exact Tooling IR#: 04
Features and Benefits
Semi-bottoming chamfers are used for blind holes. They have 3 to 3-1/2 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 | 2B |
| Thread Limit | H3 |
| Number of Flutes | 3 |
| Chamfer | Semi-Bottoming |
| Finish/Coating | Bright |
| Overall Length (Inch) | 2-23/32 |
| Helix Angle | 50 |
| Thread Standard | UNC |
| Material | High Speed Steel |
| Flute Direction | Right Hand |
| Thread Length (Decimal Inch) | 0.3110 |
| Series/List | 13039 |
| Shank Diameter (Decimal Inch) | 0.3180 |
| Material Application | Aluminum |