Value Collection 28603 Countersink 3/8 in 82 Degree 1 Flute Hss

Product Description

The VALUE COLLECTION 28603 is a single-flute countersink designed to create clean, conical recesses in material for flat-head fastener seating. Built from high speed steel (HSS), it delivers consistent cutting performance across a range of common workpiece materials. The 82-degree included angle matches the standard angle used for flat-head screws in metalworking and fabrication applications. With a 3/8-inch head diameter and a 1/4-inch shank diameter, it fits standard drill chucks and quick-change holders found in most shop and field setups. Machinists, fabricators, and maintenance technicians reach for this tool when a countersunk hole needs to be added or cleaned up without changing the basic bore diameter.

This countersink is suited for light-duty metalworking, maintenance, and fabrication tasks where a single-flute design provides a smooth, chatter-reduced cut. The 82-degree angle is appropriate for standard flat-head machine screws and is commonly used in sheet metal, light structural steel, and aluminum work. Its compact 3/8-inch head diameter makes it practical for tight-clearance applications where a larger countersink would not fit or would risk over-cutting adjacent features.

Key Features

• 82-degree included angle matches standard flat-head fastener geometry for flush seating
• Single-flute design reduces chatter and produces a smooth finish in the recess
• 3/8-inch head diameter suits light-duty countersinking in confined areas
• 1/4-inch shank diameter fits standard drill chucks and quick-change holders
• High speed steel construction provides durability across common workpiece materials

Compatibility

Designed as an OEM-style single-flute countersink compatible with any drill press, hand drill, or milling machine accepting a 1/4-inch round shank tool.

Installation Notes

A licensed machinist or experienced fabricator should install and operate this tool following standard machine shop safety practices. Secure the workpiece firmly before operation and ensure the drill or press is powered down and the chuck is stationary before inserting or removing the countersink. Use appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality. Eye protection and appropriate guarding should be in place during all cutting operations per applicable shop safety standards.