Value Collection 28615 Countersink 1/4 in 82 Deg 3 Flute Hss

Product Description

The VALUE COLLECTION 28615 is a single-flute countersink designed for creating beveled seat recesses in metal, wood, and composite materials. Built from high speed steel (HSS), it delivers the hardness and heat resistance needed for production drilling in ferrous and non-ferrous workpieces. The 82-degree included angle conforms to the standard flathead fastener geometry used across most inch-series machine screw and bolt applications. With a 1/4-inch head diameter and a 3/16-inch shank diameter, this countersink is sized for use in standard drill chucks and quick-change holders common in machine shops and fabrication environments.

This countersink is suited for light-duty countersinking tasks in machine shop, maintenance, and general fabrication settings. The 82-degree angle matches the seating profile of the majority of flat-head screws used in inch-based hardware assemblies. The compact 1/4-inch head diameter makes it well suited for work in tight clearance zones or on smaller fastener patterns where a larger-diameter countersink would cause interference or overcutting of adjacent holes.

Key Features

• 82-degree included angle matches standard flathead inch-series fastener geometry
• High speed steel construction provides hardness and heat resistance for metal cutting
• 3-flute design promotes chip evacuation and a cleaner seat finish
• 1/4-inch head diameter for compact footprint in tight work areas
• 3/16-inch shank fits standard drill chucks and quick-change tool holders

Compatibility

Designed as a standard replacement or add-on countersink for use with drill presses, hand drills, and CNC machines accepting a 3/16-inch shank; compatible with 82-degree flathead fastener seating applications in inch-series hardware assemblies.

Installation Notes

Secure the 3/16-inch shank firmly in the chuck before operation and verify the spindle is at a full stop before changing or adjusting the tool. Use appropriate cutting fluid or lubricant when countersinking steel or hard alloys to extend tool life and improve seat finish. Verify the countersink depth against the fastener head profile before full production runs to avoid overcutting. This tool should be installed and operated by machinists or trained trades personnel familiar with rotating cutting tool safety practices.