Value Collection 28604 Countersink 1/2 in 82 Deg 1 Flute Hss

Product Description

The VALUE COLLECTION 28604 is a single-flute countersink designed for creating clean, angled seat recesses in metal and other materials prior to fastener installation. The tool features a 1/2 inch head diameter and an 82-degree included angle, which is the standard angle for flat-head machine screws used in North American applications. The 1/4 inch shank diameter fits standard drill chucks and quick-change holders. The body is ground from high speed steel, providing adequate hardness and wear resistance for production and maintenance drilling tasks. Licensed tradespeople and machinists use this tool when preparing holes for flush-mount fasteners.

This countersink is suited for light-duty metal fabrication, maintenance, and repair work across industrial and commercial settings. The 82-degree angle matches the geometry of standard flat-head screws, making this tool appropriate for sheet metal work, fixture assembly, and general machining tasks where a flush fastener seat is required. The single-flute design reduces chatter compared to multi-flute countersinks in softer materials, and the compact head diameter keeps the countersink profile manageable in confined work areas.

Key Features

• 1/2 inch head diameter provides a countersink seat suitable for a range of flat-head fastener sizes
• 82-degree included angle matches the standard flat-head screw geometry common in North American hardware
• Single-flute design minimizes chatter and produces a cleaner seat in softer metals and plastics
• 1/4 inch shank diameter fits standard 3-jaw chucks and quick-change driver systems
• High speed steel construction offers sufficient hardness for general-purpose countersinking in mild steel, aluminum, and non-ferrous metals

Compatibility

Designed as a general-purpose countersink compatible with standard drill presses, hand drills, and milling machines equipped with a 1/4 inch or larger chuck capacity.

Installation Notes

This tool is installed and operated by machinists, fabricators, and maintenance technicians. Always secure the workpiece firmly before countersinking to prevent rotation or movement. Use appropriate cutting fluid or lubricant when working with ferrous metals to extend tool life and improve finish quality. Operate at a reduced spindle speed compared to standard twist drills to avoid work hardening and premature tool wear.