Vermont Tap & Die - 1/4-20 UNC 2B 4 Flute Nitride/Oxide Finish Powdered Metal Straight Flute Machine Tap - Modified Bottoming, Right Hand Thread, 2-1/2" OAL, 5/8" Thread Length, H5 Limit, Oversize
Item #: 56985013
Brand: Vermont Tap & Die
Model #: 330278
Exact Tooling IR#: 04
Features and Benefits
Modified bottoming is similar to bottoming, but the chamfer is longer and has more teeth. They are used for threading blind holes and have 2 to 2-1/2 threads.
Powdered metal cobalt high speed steel provides the highest performance of the powdered metals. It is used at extremely high temperatures and cutting speeds on highly abrasive materials.
Nitride/Oxide is used to prevent galling, welding and loading. It is commonly used on low carbon steels, stainless steels and nonferrous metals.
| Product Specifications | |
|---|---|
| Tap Type | Machine Tap |
| Thread Size (Inch) | 1/4-20 |
| Class of Fit | 2B |
| Thread Limit | H5 |
| Number of Flutes | 4 |
| Chamfer | Modified Bottoming |
| Material | Powdered Metal |
| Finish/Coating | Nitride/Oxide |
| Thread Direction | Right Hand |
| Through Coolant | NonThrough Coolant |
| Thread Standard | UNC |
| Overall Length (Decimal Inch) | 2.50000 |
| Overall Length (Inch) | 2-1/2 |
| Overall Length (mm) | 63.50 |
| Oversize | No |
| Material Grade | PMM4 |
| Series/List | 3705-HDCI |
| Thread Length (Decimal Inch) | 0.6250 |
| Thread Length (Inch) | 5/8 |
| Thread Length (mm) | 15.88 |
| Shank Diameter (Decimal Inch) | 0.2550 |
| Shank Diameter (mm) | 6.48 |
| Square Length (Inch) | 5/16 |
| Square Size (Decimal Inch) | 0.1910 |
| Square Size (mm) | 4.85 |
| Material Application | Alloy Steel; Carbon Steel; Cast Iron; Cobalt Alloys; Ferrous Alloys; Nickel Alloys; Stainless Steel; Tool Steel |
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