M.a. Ford. 92037503 Countersink 90 Degree 3 Flute Hss

Product Description

The M.A. FORD. 92037503 is a 90-degree included angle countersink designed for chamfering, countersinking, and deburring operations in metalworking and fabrication environments. Built from high-speed steel with a bright, uncoated finish, this 3-flute right-hand cutting tool features a 1/4-inch straight-cylindrical shank and a 1-5/8-inch overall length. The 3/8-inch head diameter and 0.110-inch tip diameter make it well suited for precise entry-point prep and edge cleanup in production and job-shop settings. Machinists, toolmakers, and trade professionals use this countersink in manual and CNC drilling setups where clean, consistent chamfer angles are required.

This countersink is intended for use on a range of non-ferrous and specialty materials including aluminum, brass, magnesium, magnesium alloy, Monel, high-nickel steel, and plastic. The single-end, no-pilot design gives the operator direct control over positioning and depth, making it a practical choice for bench work, drill press operations, and light-duty machine tool use. It does not include a pilot, so workpiece fixturing and alignment are handled by the operator or setup. Typical applications include countersinking fastener holes, deburring drilled edges, and chamfering entry points on sheet stock and machined components.

Key Features

• 90-degree included angle (45-degree centerline angle) for standard fastener countersink geometry
• 3 flutes for smooth cutting action and improved chip clearance
• High-speed steel construction for durability across non-ferrous and plastic workpieces
• Bright, uncoated finish — suitable for use with cutting fluid or dry
• Straight-cylindrical 1/4-inch shank fits standard drill chucks and collets
• Single-end, no-pilot design for direct operator control of depth and position

Compatibility

Designed for use on aluminum, brass, magnesium, magnesium alloy, Monel, high-nickel steel, and plastic. Compatible with any drill press, CNC machine, or hand drill equipped with a chuck or collet accepting a 1/4-inch straight shank.

Installation Notes

Secure the shank firmly in a drill chuck or collet rated for the intended spindle speed before use. Power down and lock out the machine before changing or inspecting the tool. Do not exceed recommended cutting speeds for the workpiece material, and apply cutting fluid when working harder alloys to extend tool life. Inspect the cutting edges for wear or chipping before each use.