M.a. Ford. 79031202 Countersink 82 Degree 6 Flute Hss

Product Description

The M.A. FORD. 79031202 is a single-end, 6-flute countersink designed for chamfering, countersinking, and deburring operations in a wide range of materials. Built from high-speed steel with a bright uncoated finish, it features an 82-degree included angle and a straight cylindrical shank measuring 0.25 inches in diameter. Overall length is 2 inches, and the tip nose diameter is 0.080 inches. The head diameter is 0.3125 inches. This tool does not include a pilot and is intended for right-hand cutting. Machinists, tool-and-die professionals, and fabricators working in production or job-shop environments will find it suited to both manual and CNC drilling setups.

This countersink is intended for use across a broad spectrum of materials including mild steel, alloy steel, high-tensile steel, high-nickel steel, stainless steel, cast iron, Monel, aluminum, magnesium, magnesium alloy, brass, and plastic. It is appropriate for both light-duty chamfering of fastener holes and general deburring work in fabrication, aerospace prep, and general machining environments where an 82-degree angle matches the fastener specification.

Key Features

• 82-degree included angle suited to standard flat-head fastener countersinking
• 6-flute geometry for smooth cutting action and reduced chatter
• High-speed steel construction handles a wide range of ferrous and non-ferrous materials
• Bright uncoated finish with no pilot — single-end design
• Straight cylindrical shank for compatibility with standard drill chucks and collets
• Tip nose diameter of 0.080 inches enables use in smaller hole entries

Compatibility

Designed as an OEM-style countersink for use in standard drill chucks and collets accepting a 0.25-inch straight cylindrical shank, compatible with manual drill presses, milling machines, and CNC machining centers.

Installation Notes

Secure the shank fully in a drill chuck or collet before operation and verify concentricity to minimize runout. Machinists should use appropriate cutting fluid when working with ferrous materials to extend tool life. Ensure the workpiece is firmly clamped before engaging the tool. Follow shop safety standards and applicable OSHA guidelines for rotating cutting tools.