Vermont Tap & Die - 1/4-28 UNF 2B/3B H4 Thread Limit Bottoming Thread Forming Tap - High Speed Steel, Bright Finish, 2-1/2" OAL, 5/8" Thread Length, Right Hand Thread, Series 1986
Item #: 59036947
Brand: Vermont Tap & Die
Model #: 289590
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 |
| Overall Length (mm) | 63.50 |
| Thread Standard | UNF |
| Thread Length (Decimal Inch) | 0.6250 |
| Thread Length (Inch) | 5/8 |
| Thread Length (mm) | 15.88 |
| Series/List | 1986 |
| Tapping Depth (Decimal Inch) | 1.0000 |
| Thread Direction | Right Hand |
| Shank Diameter (Decimal Inch) | 0.2550 |
| Shank Diameter (mm) | 6.48 |
| Square Length (Inch) | 5/16 |
| Square Length (mm) | 8 |
| Material Application | Alloy Steel; Aluminum Alloys; Carbon Steel; Cast Iron; Copper Alloys; Graphites & Carbons; High Temperature Alloys; Magnesium; Plastics; Stainless Steel; Titanium; Tool Steel; Zinc Alloys |
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