Guhring - 4-40 UNC 2 Flute 2B Modified Bottoming Spiral Flute Tap - High Speed Steel, Bright Finish, 2.205" OAL, Right Hand Flute, Right Hand Thread, H2/H3, Series 3931
Item #: 98844582
Brand: Guhring
Model #: 9039310028450
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 blind holes and have 2 to 2-1/2 threads.
High Speed Steel (HSS) provides good wear resistance and can be used in general purpose applications for both ferrous and nonferrous materials.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
| Product Specifications | |
|---|---|
| Thread Size (Inch) | 4-40 |
| Chamfer | Modified Bottoming |
| Class of Fit | 2B |
| Thread Limit | H2/H3 |
| Number of Flutes | 2 |
| Material | High Speed Steel |
| Finish/Coating | Bright |
| Thread Direction | Right Hand |
| Flute Direction | Right Hand |
| Through Coolant | NonThrough Coolant |
| Overall Length (Decimal Inch) | 2.2050 |
| Thread Standard | UNC |
| Series/List | 3931 |
| Neck Length (Decimal Inch) | 0.7090 |
| Tapping Depth (Decimal Inch) | 0.7090 |
| Shank Diameter (Decimal Inch) | 0.1410 |
| Shank Length (Decimal Inch) | 1.4960 |
| Material Application | Aluminum |