Value Collection SC21608S 8pc Countersink Set 1/4-1in 6 Flute

Product Description

The VALUE COLLECTION SC21608S is an 8-piece cobalt steel countersink set designed for countersinking operations in metal, wood, and composite materials. Each countersink features a 6-flute design and a 60-degree included angle, producing clean, burr-free entry holes for flathead fasteners. The set covers a head diameter range of 1/4 inch to 1 inch, making it suitable for a wide spread of fastener sizes. All pieces carry a bright, uncoated finish. Straight shanks with shank diameters of approximately 0.500 inch and 0.250 inch allow compatibility with standard drill chucks and quick-change holders. Installed by machinists, tool-and-die technicians, and maintenance trades.

This countersink set is well suited to production and maintenance environments where multiple countersink sizes are required on a single job. The 60-degree included angle is standard for most metric and unified flathead machine screw applications. The cobalt steel construction handles harder workpiece materials that would prematurely dull high-speed steel tooling. The included wood storage block keeps all 8 cutters organized and protected between uses, making the set practical for both bench and field service work.

Key Features

• 8-piece set covers 1/4 inch to 1 inch head diameter range
• 6-flute geometry for smooth cutting and reduced chatter
• 60-degree included angle suits standard flathead fastener applications
• Cobalt steel construction for extended tool life in harder materials
• Straight shank design fits standard drill chucks and quick-change holders
• Bright, uncoated finish; wood storage block included for organization

Compatibility

Designed as a general-purpose countersink set compatible with standard drill presses, CNC machines, hand drills, and milling machines accepting straight-shank tooling. Suitable for countersinking operations in steel, aluminum, wood, and composite workpieces.

Installation Notes

Countersinks should be installed by qualified machinists or trades personnel familiar with rotary cutting tools. Secure the shank fully in the chuck before operation and confirm the workpiece is clamped. Set spindle speed appropriate to the workpiece material and cutter diameter — lower speeds are typically required for larger diameters and harder materials. Inspect each cutter for wear or chipping before use and do not force a dull cutter.