Union Butterfield - 1/4-20 UNC, 2 Flute, Bright Finish, High Speed Steel Spiral Point Tap - Bottoming Chamfer, Right Hand Thread, 2-1/2" OAL, 1" Thread Length, 0.255" Shank Diam, 2B/3B Class of Fit, Series 1585NR
Item #: 57757080
Brand: Union Butterfield
Model #: 1012817
Exact Tooling IR#: 04
Features and Benefits
Bottoming chamfers are used for threading blind holes. They have 1 to 2 threads.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
High Speed Steel (HSS) provides good wear resistance and can be used in general purpose applications for both ferrous and nonferrous materials.
| Product Specifications | |
|---|---|
| Thread Size (Inch) | 1/4-20 |
| Number of Flutes | 2 |
| Chamfer | Bottoming |
| Class of Fit | 2B/3B |
| Thread Limit | H3 |
| Finish/Coating | Bright |
| Material | High Speed Steel |
| Through Coolant | NonThrough Coolant |
| Thread Direction | Right Hand |
| Overall Length (Decimal Inch) | 2.5000 |
| Overall Length (Inch) | 2-1/2 |
| Oversize | No |
| Thread Standard | UNC |
| Material Grade | M2 |
| Thread Length (Decimal Inch) | 1.0000 |
| Thread Length (Inch) | 1 |
| Series/List | 1585NR |
| Shank Diameter (Decimal Inch) | 0.2550 |
| Square Length (Inch) | 5/16 |
| Square Size (Decimal Inch) | 0.1910 |
| Material Application | Alloy Steel; Aluminum; Aluminum Alloys; Brass; Carbon Steel; Copper; Free Machining Stainless Steel; Hardened Steel; Magnesium; Nickel; Nickel Alloys; Stainless Steel; Steel; Structural Steel; Thermoplastics; Thermosetting Plastics; Titanium Alloys |