OSG - 1/2-20 UNF, 3 Flute, 3° Helix, Semi-Bottoming Chamfer, Oxide Finish, Powdered Metal Spiral Flute STI Tap - Right Hand Flute, 3-13/16" OAL, 0.48" Shank Diam, 1-13/16" Thread Length, 3B Class of Fit, Series 315
Item #: 49147192
Brand: OSG
Model #: 31502201
Exact Tooling IR#: 04
Features and Benefits
Semi-bottoming chamfers are used for blind holes. They have 3 to 3-1/2 threads.
Oxide, also known as black oxide or steam oxide, is a surface treatment that prevents chip building, galling and welding on the workpiece. It is commonly used on low carbons, stainless steel and ferrous metals.
| Product Specifications | |
|---|---|
| Thread Size (Inch) | 1/2-20 |
| Class of Fit | 3B |
| Thread Limit | H3 |
| Number of Flutes | 3 |
| Chamfer | Semi-Bottoming |
| Finish/Coating | Oxide |
| Overall Length (Inch) | 3-13/16 |
| Helix Angle | 3 |
| Thread Standard | UNF |
| Material | Powdered Metal |
| Flute Direction | Right Hand |
| Thread Length (Inch) | 1-13/16 |
| Series/List | 315 |
| Shank Diameter (Decimal Inch) | 0.4800 |
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