Htc 200-4187 Square End Mill 3/16 in 4 Flute Solid Carbide

Product Description

The HTC 200-4187 is a double-end, four-flute square end mill designed for milling operations in metalworking and machining applications. Built from solid carbide and coated with AlTiN (Aluminum Titanium Nitride), it delivers hardness and heat resistance suited for ferrous and non-ferrous materials at elevated cutting speeds. The mill diameter is 3/16 inches with a matching 3/16 inches shank diameter, a 3/8 inches length of cut, and a 2 inches overall length. The double-end design extends tool life by providing two usable cutting ends. This tool is part of the HTC Series 200 stub-length line and is sized for precision detail work in tight geometries.

This end mill is intended for use in vertical machining centers, CNC mills, and manual knee mills where stub-length tools reduce deflection and improve rigidity. The 3/16 inches diameter makes it well suited for slotting, profiling, and peripheral milling in confined spaces or small-feature workpieces. Right-hand cutting and right-hand helical flutes are standard for conventional and climb milling on most machine spindle configurations. It is a go-to tool for machinists working in aerospace, automotive, die-and-mold, and general job shop environments.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding cuts
• AlTiN coating provides high-temperature oxidation resistance and extends tool life in dry or semi-dry cutting
• Double-end design gives two cutting ends per tool, reducing per-edge cost
• Four helical flutes with right-hand cut and right-hand flute direction for standard spindle use
• Stub-length (Series 200) geometry reduces overhang deflection in precise milling passes
• Square shank for secure collet or chuck retention

Compatibility

Designed as a direct-fit replacement or standard tooling option for CNC and manual milling machines accepting a 3/16 inches round shank end mill in an ER collet, Weldon holder, or equivalent tool-holding system.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank to the recommended insertion depth in the collet or holder and torque the clamping mechanism per the tool-holder manufacturer's specification. Verify runout with a dial indicator before beginning production cuts, particularly at small diameters where runout has a proportionally larger effect on tool life and surface finish.