M.a. Ford. 79B062502 Countersink 82 Deg 6 Flute Hss

Product Description

The M.A. FORD. 79B062502 is a single-end, 6-flute countersink designed for right-hand cutting in a wide range of metalworking and fabrication applications. Built from high-speed steel, it features an 82-degree included angle and a maximum cutting diameter of 0.625 inches, making it suited for standard fastener seat preparation where precise countersink geometry is critical. The straight-cylindrical shank measures 0.375 inches in diameter, and the overall tool length is 2.25 inches. Machinists and toolroom technicians use this countersink in drill presses, CNC machining centers, and manual mills to produce clean, consistent countersunk holes for flat-head fasteners and deburring operations.

This countersink is intended for use on a broad range of materials including mild steel, alloy steel, high-tensile steel, stainless steel, cast iron, high-nickel steel, Monel, aluminum, brass, magnesium, magnesium alloy, and plastic. Its 6-flute geometry reduces chatter and produces a smoother finish compared to fewer-flute designs, making it appropriate for production environments where surface finish quality in the countersink seat matters. It is well suited to both production-run and maintenance-repair shop settings where consistent results across multiple materials are required.

Key Features

• 82-degree included angle for standard flat-head fastener countersink geometry
• 6-flute design reduces chatter and improves finish quality
• High-speed steel construction for durability across ferrous and non-ferrous materials
• Straight-cylindrical shank at 0.375 inches for broad machine compatibility
• Single-end tool with right-hand cutting direction
• Rated for use on alloy steel, stainless steel, aluminum, brass, cast iron, plastic, and more

Compatibility

Designed as an OEM-style countersink for use in standard drill chucks and collet holders accepting a 0.375-inch straight-cylindrical shank, compatible with drill presses, manual mills, and CNC machining centers.

Installation Notes

Installation and use of this countersink should be performed by qualified machinists or toolroom technicians familiar with rotating cutting tool safety. Secure the shank fully in the chuck or collet before operation and verify tool runout before cutting. Power down the machine and lock out the spindle before inserting or removing the tool. Always match spindle speed to the workpiece material and tool diameter per standard machining practice to avoid tool damage or workpiece chatter.