M.a. Ford 79200004 Countersink 100 Degree 6 Flute Hss

Product Description

The M.A. FORD 79200004 is a 6-flute, single-end countersink designed for chamfering, countersinking, and deburring operations across a wide range of materials. Manufactured from high-speed steel with a bright, uncoated finish, this tool features a 100-degree included angle and a 0.62-inch tip diameter. The 2-inch head diameter and 3/4-inch straight-cylindrical shank provide solid rigidity during cutting. With a 3-3/4-inch overall length, it is sized for use in manual or machine spindle applications. Machinists and toolroom technicians are the primary users of this countersink.

This countersink is suited for light-to-heavy material removal in machine shop, fabrication, and production environments. The 100-degree included angle and 6-flute geometry deliver smooth, chatter-resistant cutting on both ferrous and non-ferrous workpieces. It is appropriate for use in drill presses, CNC machining centers, and manual milling setups where consistent chamfer quality is required. No pilot is included, making this a standard straight-shank, free-cutting configuration.

Key Features

• 100-degree included angle (50-degree centerline angle) for standard countersinking and chamfering
• 6-flute geometry reduces chatter and produces a smoother finish compared to fewer-flute designs
• High-speed steel construction provides wear resistance across a broad material range
• 2-inch head diameter with a 3/4-inch straight-cylindrical shank for secure machine mounting
• Bright, uncoated finish - suitable for use with or without cutting fluids
• Single-end, no-pilot design for straightforward setup in standard tool holders

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 for use in standard 3/4-inch straight-shank tool holders on drill presses, manual mills, and CNC machining centers.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician familiar with rotary cutting tools. Secure the straight-cylindrical shank fully in the tool holder and verify runout before engaging the workpiece. Ensure spindle speed is appropriate for the workpiece material and tool diameter before starting the cut. Inspect the cutting edges for wear or chipping before each use and replace when edge condition degrades.