Value Collection SC2090016 Countersink 90 Deg 6 Flute Hss

Product Description

The VALUE COLLECTION SC2090016 is a single-end, six-flute countersink designed for right-hand cutting in metal and general machining applications. Built from high-speed steel (HSS) with a bright, uncoated finish, this countersink produces clean, chamfered seat profiles for flat-head fasteners and deburring work. The included angle measures 90 degrees, with a centerline angle of 45 degrees, making it a standard choice for most countersunk fastener specifications. The straight-cylindrical shank measures 1/4 inch in diameter and 1 inch in shank length, fitting standard drill chucks and quick-change holders. No pilot is included, suiting applications where the operator controls centering directly.

This countersink is suited for use in machine shops, maintenance environments, and production settings where countersunk holes are required for flat-head screws and similar fasteners. The 90-degree included angle is the most common specification for inch-standard flat-head fastener seating per ASME B18.3 and related standards. The tool runs on manual drill presses, CNC machining centers, and hand-held drill motors. It is a standard bench-stock item for machinists, tool-and-die shops, and facilities maintenance personnel.

Key Features

• 90-degree included angle with 45-degree centerline angle for standard flat-head fastener seating
• Six flutes for smooth cutting action and reduced chatter
• High-speed steel construction for durability in ferrous and non-ferrous materials
• Bright, uncoated finish — compatible with cutting fluids and coolants
• 1/4 inch straight-cylindrical shank fits standard drill chucks and collet holders
• Single-end design with no pilot for direct operator-guided centering

Compatibility

Designed as a standard replacement or bench-stock countersink for drill presses, CNC machining centers, and hand-held drill motors accepting a 1/4 inch straight-cylindrical shank.

Installation Notes

Installation is performed by machining professionals or maintenance personnel familiar with rotary cutting tools. Secure the 1/4 inch shank firmly in the chuck or collet before operation and confirm the workpiece is clamped or fixtured before starting the spindle. Use appropriate cutting fluid for the workpiece material to extend tool life. Always wear eye protection and follow shop-specific machine guarding requirements when operating rotary cutting tools.