M.a. Ford. 79037502 Countersink 82 Degree 6 Flute Hss

Product Description

The M.A. FORD. 79037502 is a single-end, 6-flute countersink designed for chamfering, countersinking, and deburring operations in metal and plastic materials. Built from high-speed steel with a bright, uncoated finish, it features an 82-degree included angle and a 3/8-inch head diameter. The 1/4-inch straight-cylindrical shank seats securely in standard collet chucks and drill press spindles. With an overall length of 2 inches and a tip diameter of 0.090 inches, this tool is sized for precision work in tight clearance areas. No pilot is included. Machinists, maintenance technicians, and fabricators install this tool in handheld or machine applications where clean, accurate chamfers are required.

This countersink is suited for use in both manual and machine tool setups across a wide range 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. Typical applications include deburring drilled holes, chamfering fastener seats, and preparing holes to accept flat-head or oval-head screws. It is appropriate for light production, job shop, and field maintenance environments where a reliable, general-purpose countersink is needed.

Key Features

• 82-degree included angle for standard flat-head fastener seat preparation
• 6 flutes for smooth cutting action and reduced chatter
• High-speed steel construction supports use across a broad range of workpiece materials
• Bright, uncoated finish with no pilot for straightforward setup
• Straight-cylindrical 1/4-inch shank fits common collet and chuck tooling
• Single-end design for dedicated chamfering, countersinking, and deburring tasks

Compatibility

Designed for use with standard 1/4-inch collet chucks, drill presses, CNC machines, and handheld drilling equipment where straight-cylindrical shank tooling is accepted.

Installation Notes

Secure the shank fully into the collet or chuck before operation and verify runout before cutting. Ensure the workpiece is clamped or fixtured to prevent movement during chamfering. Apply appropriate cutting fluid or lubricant when countersinking ferrous metals to extend tool life. Inspect the cutting edges before each use and remove the tool from service if chipping or excessive wear is observed.