M.a. Ford. 79800004 Countersink Set 8 Pc 6 Flute Hss

Product Description

The M.A. FORD. 79800004 is an 8-piece high speed steel countersink set designed for chamfering, countersinking, and deburring operations in metal and similar materials. Each countersink in the set features 6 flutes and a 100-degree included angle, covering a head diameter range from 0.125 inches to 1 inch. Shank diameters run from 0.125 inches to 0.5 inches, and overall lengths span 1.5 inches to 2.75 inches. An oxide finish protects the cutting surfaces. The set ships in a plastic storage case. It is suited for use in drill presses, CNC machines, and handheld power tools by machinists and maintenance technicians.

This countersink set covers a wide range of hole preparation tasks in a single kit. The graduated sizes make it practical for production shops and field maintenance environments where multiple fastener head sizes must be accommodated without tool changes between setups. Applications include chamfering drilled holes prior to fastener seating, deburring sheet metal edges, and countersinking for flat-head screws and bolts. Both single-end geometry and multi-flute design reduce chatter and produce clean, consistent seat angles across a variety of workpiece materials.

Key Features

• 8-piece set covers head diameters from 0.125 inches to 1 inch in graduated increments
• 6-flute design reduces chatter and produces smooth countersink seats
• 100-degree included angle for standard flat-head fastener applications
• High speed steel construction for durability across metal and non-metal substrates
• Oxide finish for added surface protection
• Includes plastic storage case for organized tool storage and transport

Compatibility

Designed as a general-purpose countersink set compatible with standard drill presses, CNC machining centers, and handheld rotary tools that accept shank diameters from 0.125 inches to 0.5 inches.

Installation Notes

Countersinks should be installed by machinists or maintenance technicians familiar with rotary cutting tool safety practices. Secure the appropriate shank size firmly in the chuck or collet before operation and verify spindle speed is appropriate for the workpiece material and tool diameter. Disengage all power to the machine before changing tools. Do not exceed the rated speed for the tool diameter in use.