OSG - 1/4-20 UNC 3 Flute 3B Modified Bottoming Spiral Flute Tap - Vanadium High Speed Steel, TiN Finish, 2-1/2" OAL, Right Hand Flute, Right Hand Thread, H3, Series 303
Item #: 70851944
Brand: OSG
Model #: 1732605
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.
Vanadium High Speed Steel (HSSE) is made of high speed steel, carbon, vanadium carbide and other alloys to increase abrasive wear resistance and toughness. It is commonly used in general applications on stainless steels and high silicon aluminums.
Titanium Nitride (TiN) is a multi-purpose coating which increases chip flow in softer materials. The heat and hardness resistance allows the tool to run at higher speeds than uncoated tools.
Fast Spiral Flutes with 40-53 degree angles are suitable for ductile materials like aluminum and copper; medium to high carbon steels and free machining stainless steels.
| Product Specifications | |
|---|---|
| Thread Size (Inch) | 1/4-20 |
| Chamfer | Modified Bottoming |
| Class of Fit | 3B |
| Thread Limit | H3 |
| Number of Flutes | 3 |
| Material | Vanadium High Speed Steel |
| Finish/Coating | TiN |
| Thread Direction | Right Hand |
| Flute Direction | Right Hand |
| Through Coolant | NonThrough Coolant |
| Overall Length (Inch) | 2-1/2 |
| Helix Angle | 45 |
| Thread Standard | UNC |
| Thread Length (Decimal Inch) | 1.0000 |
| Flute Type | Fast Spiral |
| Series/List | 303 |
| Shank Length (Decimal Inch) | 0.2550 |
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