Accupro - 1/2-20 4 Flute 3B Modified Bottoming Spiral Flute Tap - Vanadium High Speed Steel, Nitride Finish, 3-3/8" OAL, Right Hand Flute, Right Hand Thread, H3
Item #: 62667340
Brand: Accupro
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.
Nitride is a thin, hard-shell coating that supports surface hardness of the tool. It is commonly used where abrasive or wearing conditions exist.
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) | 1/2-20 |
| Chamfer | Modified Bottoming |
| Class of Fit | 3B |
| Thread Limit | H3 |
| Number of Flutes | 4 |
| Material | Vanadium High Speed Steel |
| Finish/Coating | Nitride |
| Thread Direction | Right Hand |
| Flute Direction | Right Hand |
| Through Coolant | NonThrough Coolant |
| Overall Length (Decimal Inch) | 3.3750 |
| Overall Length (Inch) | 3-3/8 |
| Overall Length (mm) | 85.73 |
| Helix Angle | 15 |
| Material Grade | 3% Vanadium HSS |
| Oversize | No |
| Thread Length (mm) | 21.00 |
| Flute Type | Slow Spiral |
| Shank Diameter (mm) | 9.32 |
| Material Application | Cast Iron |
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