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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 - Benchmark Tooling

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
$51.32

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