M.a. Ford. 79050002 Countersink 82 Degree 6 Flute Hss

Product Description

The M.A. FORD. 79050002 is a single-end, 6-flute countersink with an 82-degree included angle, manufactured from high-speed steel with a bright, uncoated finish. It features a 3/8-inch straight-cylindrical shank, a 1/2-inch head diameter, and a 2-inch overall length. Designed for right-hand cutting, this tool handles chamfering, countersinking, and deburring operations across a wide range of materials. It does not include a pilot and is sold as a head-and-shank unit. Machinists and fabricators working in job shops, maintenance environments, or production settings will find it suited for hand-drilling setups as well as drill press and milling machine use.

This countersink is appropriate for use on alloy steel, mild steel, stainless steel, cast iron, aluminum, brass, magnesium, magnesium alloy, high-tensile steel, high-nickel steel, Monel, and plastic. The 82-degree included angle is the standard for flat-head fastener seating in many aerospace and general metalworking applications. The 6-flute geometry provides a smooth finish and reduced chatter compared to fewer-flute designs, making it a practical choice for finish-critical countersink work.

Key Features

• 82-degree included angle for standard flat-head fastener seating
• 6-flute design reduces chatter and improves surface finish
• High-speed steel construction provides durability across a broad material range
• Bright, uncoated finish suitable for general-purpose use
• Straight-cylindrical 3/8-inch shank fits standard drill chucks and collets
• No pilot required, allowing single-tool chamfering and deburring without a guide

Compatibility

Designed as an OEM-style countersink for use in standard drill chucks, collet holders, and drill press setups accepting a 3/8-inch straight-cylindrical shank.

Installation Notes

This tool is typically installed by machinists, toolmakers, or fabricators using a drill press, milling machine, or hand drill with a compatible chuck or collet. Secure the shank fully in the chuck before operation and confirm the workpiece is clamped. Run at appropriate surface speeds for the workpiece material to avoid work hardening or premature tool wear. Inspect the cutting edges before use and remove the tool from the spindle before making any workpiece adjustments.