M.a. Ford 79087502 Countersink 82 Deg 6 Flute Hss Right Hand

Product Description

The M.A. FORD 79087502 is a single-end, 6-flute high-speed steel countersink designed for right-hand cutting at an 82-degree included angle. With a 7/8-inch head diameter, a 1/2-inch straight cylindrical shank, and an overall length of 2.75 inches, this tool handles chamfering, countersinking, and deburring across a broad range of materials. The bright/uncoated finish and HSS construction make it a straightforward, reliable option for machinists and fabricators working in general manufacturing, maintenance, and toolroom environments.

This countersink is suited for use on manual mills, drill presses, and CNC setups requiring a standard 82-degree countersink profile. The 82-degree angle matches the most common flat-head fastener specification used in North American manufacturing. It is appropriate for production and job-shop applications where consistent chamfer geometry is required across multiple material types. No pilot is included, so a center-drilled or pre-drilled hole is recommended before use.

Key Features

• 82-degree included angle (41-degree centerline angle) matches standard flat-head fastener geometry
• 6-flute design provides smoother cutting action and improved finish quality
• High-speed steel construction suitable for a wide range of workpiece materials
• 1/2-inch straight cylindrical shank fits standard drill chucks and collet holders
• Single-end tool with no pilot — works with pre-drilled or center-drilled holes
• Bright/uncoated finish — no coating buildup concerns on soft or gummy materials

Compatibility

Designed for use on alloy steel, aluminum, brass, cast iron, high-nickel steel, high-tensile steel, magnesium, magnesium alloy, mild steel, Monel, plastic, and stainless steel workpieces. Fits any machine spindle or chuck accepting a 1/2-inch straight shank.

Installation Notes

This tool is installed by a machinist or toolroom technician into a drill press, milling machine, or CNC spindle using a standard drill chuck or collet rated for 1/2-inch straight shanks. Power down and lock out the machine before changing tooling. Pre-drill or center-drill the workpiece to the required hole diameter before countersinking — plunging directly into solid material without a pilot hole is not recommended and will shorten tool life. Verify spindle speed is appropriate for the workpiece material before operation.