M.a. Ford. 79018706 Countersink 120 Degree 6 Flute Hss

Product Description

The M.A. FORD. 79018706 is a single-end, 6-flute countersink designed for chamfering, countersinking, and deburring operations in metalworking and fabrication environments. Manufactured from high-speed steel with a bright/uncoated finish, it features a 120-degree included angle and a 3/16-inch straight-cylindrical shank. Overall length is 1.5 inches. The right-hand cutting direction suits standard drill press and hand-drill setups. No pilot is included. This tool is installed and used by machinists, tool-and-die workers, and maintenance technicians working across a wide range of materials and production settings.

This countersink is suited for light-duty to general-purpose countersinking on flat and curved workpiece surfaces. Its compact 1.5-inch overall length makes it practical for tight-clearance applications. The 120-degree included angle matches common fastener head geometries used in standard assembly work. Compatible material applications include alloy steel, aluminum, brass, cast iron, high-nickel steel, high-tensile steel, magnesium, magnesium alloy, mild steel, Monel, plastic, and stainless steel, making it a versatile single tool for mixed-material shops.

Key Features

• 120-degree included angle with 60-degree centerline angle for standard fastener seat geometry
• 6-flute design for smoother cutting action and reduced chatter on entry
• High-speed steel construction for durability across a broad range of workpiece materials
• Bright/uncoated finish - no coating buildup to affect dimensional accuracy
• Straight-cylindrical 3/16-inch shank fits standard drill chucks without adapters
• Single-end, no-pilot design for direct positioning on pre-drilled holes

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 drill press or hand drill accepting a 3/16-inch straight-cylindrical shank.

Installation Notes

This tool is operated by machinists and maintenance technicians using standard drill presses, CNC machines, or hand drills. Secure the shank firmly in the chuck before operation and confirm the workpiece is clamped or fixtured to prevent movement. Use appropriate cutting fluid or lubrication when working with ferrous metals or stainless steel to extend tool life. Follow applicable shop safety procedures for rotating cutting tools, including eye protection and proper RPM selection for the workpiece material.