Value Collection SC20828S Countersink Set 8 Pc Hss

Product Description

The VALUE COLLECTION SC20828S is an 8-piece high-speed steel countersink set covering head diameters from 1/4 inch to 1 inch. Each countersink features a 6-flute design and an 82-degree included angle, which is the standard angle for flat-head fasteners used in metalworking and woodworking applications. The single-end, right-hand cutting geometry produces clean, chatter-reduced entry holes. The bright, uncoated finish keeps tolerances tight and allows the cutting edge condition to be inspected easily. Machinists, tool-and-die tradespeople, and maintenance technicians keep this set on hand for countersinking a range of fastener sizes without swapping tool holders repeatedly.

This set is suited for production shops, maintenance departments, and fabrication environments where multiple countersink sizes are needed at a single workstation. The straight shank design is compatible with standard drill chucks and collet holders. All 8 countersinks store in an included wood block, keeping the set organized and protecting cutting edges between uses. Typical applications include deburring drilled holes, seating flat-head machine screws flush, and preparing workpieces for flush-mount hardware in both metal and wood substrates.

Key Features

• 8-piece set covers 1/4 inch to 1 inch head diameters in a single kit
• 6-flute geometry reduces chatter and produces a smoother countersink surface
• 82-degree included angle matches standard flat-head fastener geometry
• High-speed steel construction provides durability across metal and wood materials
• Right-hand, single-end cutting for use in standard drill chucks and collet holders
• Bright uncoated finish allows easy visual inspection of cutting edge condition
• Included wood storage block protects edges and keeps sizes organized

Compatibility

Designed as a general-purpose countersink set for use with standard straight-shank drill chucks and collet holders in metalworking and woodworking applications requiring an 82-degree countersink angle.

Installation Notes

Countersinks should be installed and removed by a qualified machinist or maintenance technician with the machine fully powered down and locked out before any tool change. Secure the straight shank firmly in the chuck or collet to the full depth of the shank before running the spindle. Start at a reduced spindle speed to confirm concentricity before increasing feed rate. Do not force the tool or use it on hardened materials beyond its rated capacity.