Kennametal - 1/4-20 UNC 3 Flute 3B Modified Bottoming Spiral Flute Tap - Powdered Metal, TiN/CrC/C Finish, 63.5mm OAL, Right Hand Flute, Right Hand Thread, H3, Series T662
Item #: 68478742
Brand: Kennametal
Model #: 5566077
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.
Powdered Metal (PM) is tougher and more cost effective than solid carbide. It is commonly used on highly abrasive materials including high silicon aluminums.
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) | 1/4-20 |
| Chamfer | Modified Bottoming |
| Class of Fit | 3B |
| Thread Limit | H3 |
| Number of Flutes | 3 |
| Material | Powdered Metal |
| Finish/Coating | TiN/CrC/C |
| Thread Direction | Right Hand |
| Flute Direction | Right Hand |
| Through Coolant | NonThrough Coolant |
| Overall Length (Decimal Inch) | 2.5000 |
| Overall Length (mm) | 63.50 |
| Helix Angle | 10 |
| Thread Standard | UNC |
| Oversize | No |
| Thread Length (Decimal Inch) | 0.4400 |
| Thread Length (mm) | 11.10 |
| Flute Type | Slow Spiral |
| Series/List | T662 |
| Neck Length (Decimal Inch) | 0.5700 |
| Tapping Depth (Decimal Inch) | 1.0100 |
| Tapping Depth (mm) | 26.00 |
| Shank Diameter (Decimal Inch) | 0.2550 |
| Shank Diameter (mm) | 6.48 |
| Shank Length (Decimal Inch) | 1.2200 |
| Shank Length (mm) | 31 |
| Square Length (Inch) | 0.3100 |
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