Square nose end mills (also called square end) create sharp, unrounded cuts
Number of flutes varies; fewer flutes have more chip-carrying capacity and more flutes produce a finer finish
Titanium nitride (TiN) is a general-purpose coating that combines high-temperature resistance and increased hardness compared to uncoated end mills
High-speed steel is compatible with a variety of materials
Meets ANSI specification B94.19 for quality assurance

Technical Details

Product Details

Package Dimensions
Width : 1.4 inch
Height : 1.3 inch
Length : 4.6 inch

Shipping Weight: 0 ounce (View shipping rates and policies)

ASIN : B01IEON97Y

Product Description

The Union Butterfield TN940 TiN-coated high-speed steel square end mill has a multi-flute, non-center-cutting design and a 30-degree helix angle for general-purpose machining on a range of materials. The number of flutes varies; fewer flutes provide better chip-carrying capacity, while more flutes produce a finer finish. The general-purpose TiN coating combines stability at high temperatures with hardness for wear protection, increasing tool life and performance compared to uncoated end mills (TiN is suitable for a range of materials, but uncoated end mills are recommended for machining aluminum). High-speed steel is a common general-purpose steel for cutting tools and is compatible with a variety of materials. The square end creates sharp, unrounded cuts. The 30-degree helix angle supports general-purpose applications. It balances lower angles’ strong cutting edge for difficult-to-machine materials with higher angles’ increased cutting action. The non-center-cutting design is for applications such as peripheral milling and finishing. The cutting diameter tolerance is +0.003” to -0.000”. This tool has a Weldon shank that provides a secure hold in the toolholder and helps prevents slippage. It meets ANSI specification B94.19 for quality assurance. End mills are designed to remove material and create multi-dimensional shapes and profiles. They have cutting edges along the outside diameter and flutes that remove chips from the cutting area and allow cooling fluids to enter. If heat is not reduced effectively, the tool’s cutting edges will dull and additional material buildup can occur. The number of flutes can range from two to eight. Two-flute designs offer the most efficient chip removal, but more flutes provide a smoother finish. The shank is the end of the tool held in place by a tool holder or machine. Center-cutting end mills can create three-dimensional shapes and profiles, and make plunge cuts similar to a drill bit. Non-center-cutting end mills are for applications such as peripheral milling and finishing, but cannot make plunge cuts. Dormer Pramet manufactures cutting tools under the following brands: Precision Twist Drill, Dormer, Union Butterfield and Pramet. The company has locations around the world, and provides tools adhering to ANSI, NAS, and DIN standards.