Value Collection SC4082100 Countersink 82 Deg 3 Flute Hss

Product Description

The VALUE COLLECTION SC4082100 is a single-end, 3-flute countersink designed for deburring and seat-forming operations in metal fabrication and machining applications. Built from high-speed steel (HSS) with a bright uncoated finish, it features an 82-degree included angle (41-degree centerline angle) suited for flat-head fastener seat preparation. The straight cylindrical shank measures 0.5 inches in diameter with a shank length of 1.25 inches, and the head diameter is 1 inch. No pilot is included. Right-hand cutting direction makes it compatible with standard drill press and hand-drill setups. Machinists, tool and die workers, and general fabricators are the typical installers.

This countersink is used in production and maintenance machining environments where consistent 82-degree flat-head screw seats are required. It is suited for ferrous and non-ferrous metals in both shop and field repair scenarios. The 3-flute geometry provides a balance of cutting speed and surface finish quality. The straight cylindrical shank fits standard drill chucks and collet holders without an adapter. Typical applications include countersinking clearance holes in structural steel, aluminum plate, and similar materials ahead of flat-head fastener installation.

Key Features

• 82-degree included angle sized for standard flat-head machine screw seating
• 3-flute design balances chip clearance with surface finish quality
• High-speed steel construction provides wear resistance across common machining materials
• Bright uncoated finish — no coating buildup to affect dimensional accuracy
• Straight cylindrical shank fits standard drill chucks and collet holders directly
• Single-end, no-pilot configuration for use with pre-drilled pilot holes

Compatibility

Designed as a standard single-end countersink for use in drill presses, CNC machining centers, and hand drills equipped with a chuck or collet accepting a 0.5-inch straight cylindrical shank.

Installation Notes

This tool is installed by machinists and fabricators using standard chuck or collet toolholding. Secure the shank fully in the chuck before operation and confirm runout is within acceptable limits for the application. A pre-drilled pilot hole sized to the fastener body diameter should be present before countersinking. Use appropriate cutting fluid or lubricant for the workpiece material to extend tool life and improve finish quality.