Value Collection SC1090012 Countersink 90 Degree 1 Flute Hss

Product Description

The VALUE COLLECTION SC1090012 is a single-flute, high-speed steel countersink designed for creating clean, chamfered seat angles in a wide range of materials. Built with a 90-degree included angle and a 45-degree centerline angle, it produces the standard conical recess used for flat-head fastener seating. The straight cylindrical shank measures 3/16 inches in diameter, making it compatible with standard drill chucks and quick-change holders. The bright, uncoated finish suits general-purpose countersinking applications where coating adhesion or heat management from coated tooling is not required. Weighing 0.06 pounds, this is a compact, lightweight tool suited for bench work and field use alike.

This countersink is intended for metalworking, woodworking, and light fabrication applications where a 90-degree flat-head fastener seat is needed. The single-flute geometry is commonly used in hand-held drill or drill-press setups where chatter control and clean entry are priorities. It is well suited for machinists, maintenance technicians, fabricators, and tool-and-die shops performing countersinking operations on ferrous and non-ferrous materials. The 3/16-inch shank diameter fits standard collets and chucks without adapters in most benchtop and handheld drill configurations.

Key Features

• 90-degree included angle produces standard flat-head fastener seating geometry
• Single-flute design reduces chatter and improves surface finish in light-duty countersinking
• High-speed steel construction provides hardness and wear resistance across a broad range of materials
• 3/16-inch straight cylindrical shank fits standard drill chucks and collet holders
• Bright, uncoated finish suitable for general-purpose applications without specialty coating requirements
• Compact and lightweight at 0.06 pounds, practical for bench and portable use

Compatibility

Designed as a general-purpose countersink for use in standard drill chucks and collet systems accepting a 3/16-inch straight shank. Suited for countersinking operations on ferrous metals, non-ferrous metals, and wood composites in typical shop and maintenance environments.

Installation Notes

Countersinks should be installed and operated by machinists or trained technicians familiar with rotary cutting tool safety. Secure the shank firmly in a drill chuck or collet before operation and verify that the workpiece is clamped or fixtured to prevent movement. Use appropriate cutting speeds for the workpiece material to avoid tool overheating, as this tool is uncoated and relies on proper speed and feed selection for tool life. Always wear eye protection when operating rotary cutting tools.