OSG - 1/4-28 UNF 3 Flute 3B Bottoming Spiral Flute Tap - Powdered Metal, Oxide Finish, 2-1/2" OAL, Right Hand Flute, Right Hand Thread, H3, Series 313NI
Item #: 05111588
Brand: OSG
Model #: 0140501
Exact Tooling IR#: 04
Features and Benefits
Bottoming chamfers are used for threading blind holes. They have 1 to 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.
Slow Spiral Flutes with 8-20 degree angles are used for tough materials like high nickel alloys, titanium and some series of stainless steels.
| Product Specifications | |
|---|---|
| Thread Size (Inch) | 1/4-28 |
| Chamfer | Bottoming |
| Class of Fit | 3B |
| Thread Limit | H3 |
| 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 | 10 |
| Thread Standard | UNF |
| Oversize | No |
| Thread Length (Inch) | 1 |
| Flute Type | Slow Spiral |
| Series/List | 313NI |
| Shank Diameter (Decimal Inch) | 0.2550 |
| Material Application | Hardened Steel; High Nickel Alloy; Stainless Steel; Titanium |
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