OSG - 1/4-28 UNF 3 Flute Semi-Bottoming Spiral Flute Tap - Powdered Metal, Oxide Finish, 2-1/2" OAL, Right Hand Flute, Right Hand Thread, H7, Series 303
Item #: 53875415
Brand: OSG
Model #: 1763801
Exact Tooling IR#: 04
Features and Benefits
Semi-bottoming chamfers are used for blind holes. They have 3 to 3-1/2 threads.
Powdered Metal (PM) is tougher and more cost effective than solid carbide. It is commonly used on highly abrasive materials including high silicon aluminums.
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) | 1/4-28 |
| Chamfer | Semi-Bottoming |
| Thread Limit | H7 |
| Number of Flutes | 3 |
| Material | Powdered Metal |
| Finish/Coating | Oxide |
| Thread Direction | Right Hand |
| Flute Direction | Right Hand |
| Through Coolant | NonThrough Coolant |
| Overall Length (Inch) | 2-1/2 |
| Helix Angle | 45 |
| Thread Standard | UNF |
| Thread Length (Inch) | 1 |
| Series/List | 303 |
| Shank Diameter (Decimal Inch) | 0.2550 |
2% Off All Online Orders
Use Code: 2%OFF
Best Price Guarantee - Email Us A Better Published Price and We'll Beat It