Value Collection SC20608S Countersink Set 8 Pc Hss

Product Description

The VALUE COLLECTION SC20608S is an 8-piece countersink set made from high-speed steel (HSS) and designed for right-hand countersinking operations in metal, wood, and composite materials. Each countersink features a 6-flute design with a 60-degree included angle, producing clean, consistent seat profiles for flat-head fasteners. Head diameters range from 1/4 inch to 1 inch, giving machinists and fabricators a broad size selection in a single kit. Shanks are straight and sized at approximately 1/2 inch and 1/4 inch (12.70 mm and 6.35 mm) to fit standard drill chucks and CNC tool holders. The bright, uncoated finish is typical for general-purpose HSS tooling intended for a wide range of cutting conditions.

This set suits production and maintenance environments where multiple countersink diameters are needed without changing tool holders repeatedly. Common applications include preparing holes for flat-head machine screws, wood screws, and aerospace-style fasteners. The included wood block storage keeps tools organized and accessible on a workbench or in a tool crib. The set is appropriate for use in manual drill presses, lathes, and light CNC operations. Machinists, toolroom technicians, and maintenance mechanics are the primary installers and users of this type of tooling.

Key Features

• 8-piece set covers 1/4 inch to 1 inch head diameters in a single kit
• 6-flute geometry produces smooth, chatter-resistant countersink seats
• 60-degree included angle suits standard flat-head fastener specifications
• High-speed steel construction handles steel, aluminum, wood, and plastics
• Straight shank design fits standard drill chucks and collet holders
• Wood block storage keeps the set organized and prevents tool damage

Compatibility

Designed as a general-purpose countersink set compatible with standard drill presses, lathes, hand drills, and light-duty CNC equipment accepting straight-shank tooling. Suitable for countersinking flat-head fastener seats in metal, wood, and composite workpieces.

Installation Notes

Countersinks should be installed in a properly tightened drill chuck or collet before powering the machine. Always secure the workpiece firmly before beginning the cut and start at a reduced RPM to confirm seat alignment before reaching full cutting speed. Inspect the cutting edges for wear or chipping before each use, and replace any tool showing damage to avoid irregular seat profiles. Refer to machine manufacturer guidelines and applicable shop safety standards for spindle speed recommendations based on material type.