M.a. Ford. 79T037503 Countersink 90 Deg 6 Flute Hss Tin

Product Description

The M.A. FORD. 79T037503 is a single-end countersink designed for precise chamfering and countersinking operations in a wide range of metalworking and fabrication applications. Built from high-speed steel with a TiN (titanium nitride) coating, it delivers extended tool life and reduced friction at the cutting edge. The 90-degree included angle suits standard flat-head fastener seating. With a 3/8 inch maximum cutting diameter, a 1/4 inch straight-cylindrical shank, and a 2 inch overall length, this tool fits common drill chucks and collet holders used in production and maintenance environments. It is installed and operated by machinists, tool-and-die technicians, and maintenance mechanics.

This countersink is suited for use on a broad spectrum of materials including alloy steel, mild steel, stainless steel, cast iron, high-tensile steel, high-nickel steel, Monel, aluminum, brass, magnesium, magnesium alloy, and plastic. It is appropriate for both manual drilling setups and CNC or bench drill press operations where consistent countersink geometry is required for flush fastener installation. The right-hand cutting direction is compatible with standard drill press and CNC spindle rotation.

Key Features

• 90-degree included angle for standard flat-head and oval-head fastener seating
• 6-flute design provides smooth cutting action and improved surface finish
• High-speed steel construction offers durability across a wide range of workpiece materials
• TiN coating reduces friction, extends tool life, and improves wear resistance
• 1/4 inch straight-cylindrical shank fits standard drill chucks and collet holders
• Single-end configuration for straightforward tool changes and setup

Compatibility

Compatible with alloy steel, aluminum, brass, cast iron, high-nickel steel, high-tensile steel, magnesium, magnesium alloy, mild steel, Monel, plastic, and stainless steel workpieces. Designed as an OEM-style countersink for use with standard 1/4 inch drill chucks and collet systems.

Installation Notes

Installation and operation should be performed by qualified machinists or maintenance mechanics familiar with rotating cutting tools. Secure the 1/4 inch shank firmly in the drill chuck or collet before operation and verify runout before beginning a cut. Always power down and de-energize the machine spindle before changing or adjusting the tool. Follow applicable OSHA and shop safety standards for rotating tool use, including proper workpiece clamping and appropriate personal protective equipment.