Guhring - 1/4-20 UNC, 3 Flutes, Plug Chamfer, TiN Finish, Cobalt Spiral Point STI Tap - 0.318" Shank Diam, 0.238" Square Size, 3B Class of Fit, Series 3990
Item #: 07034317
Brand: Guhring
Model #: 9039900063500
Exact Tooling IR#: 04
Features and Benefits
Plug chamfers are the most commonly used chamfer and are designed for efficiently threading through and blind holes. They have 3 to 5 threads.
Titanium Nitride (TiN) is a multi-purpose coating which increases chip flow in softer materials. The heat and hardness resistance allows the tool to run at higher speeds than uncoated tools.
| Product Specifications | |
|---|---|
| Thread Size (Inch) | 1/4-20 |
| Class of Fit | 3B |
| Number of Flutes | 3 |
| Chamfer | Plug |
| Finish/Coating | TiN |
| Overall Length (Decimal Inch) | 2.7200 |
| Thread Standard | UNC |
| Material | Cobalt |
| Thread Length (Decimal Inch) | 0.4530 |
| Shank Diameter (Decimal Inch) | 0.3180 |
| Square Size (Decimal Inch) | 0.2380 |
| Series/List | 3990 |
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