Value Collection 28619 Countersink 3/4 in 82 Deg 3 Flute Hss

Product Description

The VALUE COLLECTION 28619 is a single-flute-body countersink designed for producing clean, accurately angled conical seat profiles in metal and other machinable materials. With a 3/4 inch head diameter, an 82-degree included angle, and a 3-flute cutting geometry, this tool removes material efficiently while reducing chatter compared to single-flute designs. The 1/2 inch shank diameter provides rigid clamping in standard drill chucks and collet holders. Constructed from high speed steel, the 28619 maintains cutting edge integrity across a range of ferrous and non-ferrous workpiece materials. Machinists, toolroom technicians, and maintenance professionals use this countersink for deburring, chamfering, and seating flat-head fasteners to flush or below-flush finishes.

The 28619 is suited for bench drill press work, hand-held electric drill applications, and manual machining operations where a 1/2 inch shank tool can be secured. The 82-degree included angle matches the seating geometry required by many flat-head machine screws and aerospace-style fasteners. The 3-flute design is appropriate for use in steel, aluminum, brass, and similar materials encountered in general fabrication, maintenance, and light manufacturing environments.

Key Features

• 3/4 inch head diameter provides a wide countersink profile suitable for larger fastener head clearances
• 82-degree included angle matches flat-head screw seating geometry common in metalworking applications
• 3-flute cutting geometry reduces chatter and produces a smoother finish compared to single-flute countersinks
• 1/2 inch shank diameter compatible with standard drill chucks and collet holders
• High speed steel construction offers durability across ferrous and non-ferrous materials

Compatibility

Designed as a general-purpose countersink for use in drill presses, hand drills, and milling machine setups accepting a 1/2 inch shank diameter cutting tool.

Installation Notes

Installation is performed by machinists or maintenance technicians securing the 1/2 inch shank in a suitable chuck or collet holder. Ensure the spindle is fully stopped and the machine is powered down before inserting or removing the tool. Use appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality. Verify countersink depth with a test piece before committing to production holes.