Guhring - 1/4-20 UNC 2BX H7/H8 Thread Limit Modified Bottoming Thread Forming Tap - High Speed Steel, TiCN Finish, 3.15" OAL, Right Hand Thread, Series 4379
Item #: 98843980
Brand: Guhring
Model #: 9043790063500
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 to the bottom of blind holes and have 2 to 2-1/2 threads.
Titanium carbonitride (TiCN) is harder and more wear resistant than TiN. It is used on stainless steels, cast iron and aluminum alloys.
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 |
| Class of Fit | 2BX |
| Thread Limit | H7/H8 |
| Chamfer | Modified Bottoming |
| Finish/Coating | TiCN |
| Material | High Speed Steel |
| Overall Length (Decimal Inch) | 3.1500 |
| Thread Standard | UNC |
| Series/List | 4379 |
| Neck Length (Decimal Inch) | 1.1811 |
| Tapping Depth (Decimal Inch) | 1.1811 |
| Thread Direction | Right Hand |
| Shank Diameter (Decimal Inch) | 0.2550 |
| Shank Length (Decimal Inch) | 1.97 |
| Through Coolant | Yes |