Union Butterfield - #4-40 UNC 2B/3B H3 Thread Limit Bottoming Thread Forming Tap - Powdered Metal High Speed Steel, TiN Finish, 1-7/8" OAL, 5/16" Thread Length, Right Hand Thread, Series 1641
Item #: 70316393
Brand: Union Butterfield
Model #: 1712221
Exact Tooling IR#: 04
Features and Benefits
Bottoming chamfers are used for threading blind holes to the bottom. They have 1 to 2 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.
Powdered Metal (PM) is tougher and more cost effective than solid carbide. It is commonly used on highly abrasive materials including high silicon aluminums.
| Product Specifications | |
|---|---|
| Thread Size (Inch) | #4-40 |
| Class of Fit | 2B/3B |
| Thread Limit | H3 |
| Chamfer | Bottoming |
| Finish/Coating | TiN |
| Material | Powdered Metal High Speed Steel |
| Overall Length (Decimal Inch) | 1.8750 |
| Overall Length (Inch) | 1-7/8 |
| Thread Standard | UNC |
| Thread Length (Decimal Inch) | 0.3125 |
| Thread Length (Inch) | 5/16 |
| Series/List | 1641 |
| Neck Length (Decimal Inch) | 0.2500 |
| Neck Length (Inch) | 1/4 |
| Thread Direction | Right Hand |
| Shank Diameter (Decimal Inch) | 0.1410 |
| Square Length (Inch) | 3/16 |
2% Off All Online Orders
Use Code: 2%OFF
Best Price Guarantee - Email Us A Better Published Price and We'll Beat It