Value Collection 28616 Countersink 3/8 in Hss 3 Flute

Product Description

The VALUE COLLECTION 28616 is a single-use countersink designed to create conical seat recesses in metal, wood, and composite materials ahead of flat-head fastener installation. The tool features a 3/8 inch head diameter and an 82 degree included angle, making it compatible with the most common flat-head screw geometry used in general metalworking and fabrication. Three flutes provide clean, chatter-resistant cutting at moderate feed rates. The 1/4 inch shank fits standard drill chucks and quick-change holders. The body is manufactured from high speed steel, offering sufficient hardness for production use in mild steel, aluminum, and non-ferrous stock.

This countersink is suited for bench-top drilling operations, CNC drill press setups, and hand-drill applications in light fabrication, HVAC sheet metal work, electrical panel fabrication, and general maintenance environments. The 82 degree angle matches the seating geometry of the most widely used flat-head machine screws and sheet metal screws in North American trade applications. It is sold individually and fits any trade professional who needs a reliable, standard-geometry countersink without a full set.

Key Features

• 3/8 inch head diameter provides adequate coverage for common flat-head fastener sizes
• 82 degree included angle matches standard flat-head screw seating geometry
• 3-flute design reduces chatter and promotes clean, smooth recess walls
• High speed steel construction handles mild steel, aluminum, and non-ferrous materials
• 1/4 inch shank fits standard drill chucks and quick-change bit holders

Compatibility

Designed as a standard-geometry countersink for use with 1/4 inch drill chucks and quick-change shank systems in drill presses, hand drills, and CNC drilling equipment. Fits applications requiring an 82 degree flat-head seat recess.

Installation Notes

Install the 28616 into a 1/4 inch drill chuck or compatible quick-change holder and tighten securely before operation. Use at moderate spindle speeds with light, consistent feed pressure to avoid work hardening or tool chatter in metal stock. Disengage power to any machine tool before changing bits or adjusting chuck position. Always wear appropriate eye protection when operating rotary cutting tools.