Walter-Prototyp - 1/4-28 UNF 3 Flute 3B Modified Bottoming Spiral Flute Tap - Powdered Metal, Bright Finish, 2-1/2" OAL, Right Hand Flute, Right Hand Thread, Series A234101
Item #: 71484802
Brand: Walter-Prototyp
Model #: 5080777
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.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
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 | Modified Bottoming |
| Class of Fit | 3B |
| Number of Flutes | 3 |
| Material | Powdered Metal |
| Finish/Coating | Bright |
| Thread Direction | Right Hand |
| Flute Direction | Right Hand |
| Through Coolant | NonThrough Coolant |
| Overall Length (Decimal Inch) | 2.5000 |
| Overall Length (Inch) | 2-1/2 |
| Overall Length (mm) | 63.50 |
| Helix Angle | 10 |
| Thread Standard | UNF |
| Oversize | No |
| Thread Length (Decimal Inch) | 0.7870 |
| Thread Length (mm) | 19.99 |
| Flute Type | Slow Spiral |
| Series/List | A234101 |
| Shank Diameter (Decimal Inch) | 0.2550 |
| Shank Diameter (mm) | 6.48 |
| Square Length (Inch) | 5/16 |
| Material Application | Aluminum; Cast Steel; Gray Cast Iron; Malleable Cast Iron; Non-Ferrous Metals; Spheroidal Cast Iron; Steel; Vermicular Cast Iron |
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