Union Butterfield - 1/4-28 UNF 2B/3B H4 Thread Limit Bottoming Thread Forming Tap - High Speed Steel, Bright Finish, 2-1/2" OAL, 1" Thread Length, Right Hand Thread, Series 1580
Item #: 66382599
Brand: Union Butterfield
Model #: 1310076
Exact Tooling IR#: 04
Features and Benefits
Bottoming chamfers are used for threading blind holes to the bottom. 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) | 1/4-28 |
| Class of Fit | 2B/3B |
| Thread Limit | H4 |
| Chamfer | Bottoming |
| Finish/Coating | Bright |
| Material | High Speed Steel |
| Overall Length (Decimal Inch) | 2.5000 |
| Overall Length (Inch) | 2-1/2 |
| Thread Standard | UNF |
| Thread Length (Decimal Inch) | 1.0000 |
| Thread Length (Inch) | 1 |
| Series/List | 1580 |
| Thread Direction | Right Hand |
| Shank Diameter (Decimal Inch) | 0.2550 |
| Square Length (Inch) | 5/16 |