Hertel 90024 Countersink Set 10 Pc 6 Flute Hss

Product Description

The HERTEL 90024 is a 10-piece countersink set designed for professional countersinking operations in metal, wood, and composite materials. The set covers a head diameter range of 0.25 inches to 1.5 inches, with all cutters ground to a 60-degree included angle. Each countersink features 6 flutes for smooth, chatter-resistant cutting action. Constructed from high-speed steel (HSS) with a bright, uncoated finish, these tools deliver consistent performance across a range of hole preparation tasks. The set stores in a fitted wood case, keeping tools organized and protected on the job or in the shop.

This set suits machinists, tool-and-die shops, production facilities, and maintenance technicians who need a broad size range in a single kit. The 0.25-inch to 1.5-inch head diameter range handles light fastener prep through large-diameter countersinking in a single set. The 60-degree included angle is standard for flat-head screw seating in metal applications. The wood storage case makes this a practical bench or field kit for trade professionals who countersink frequently across varying fastener sizes.

Key Features

• 10-piece set covering 0.25 to 1.5 inch head diameters in a single kit
• 60-degree included angle — standard geometry for flat-head fastener seating
• 6-flute design reduces chatter and produces a cleaner countersink finish
• High-speed steel construction provides durability across ferrous and non-ferrous materials
• Bright, uncoated finish for general-purpose countersinking applications
• Fitted wood storage case keeps all 10 pieces organized and protected

Compatibility

Designed as a general-purpose countersink set suitable for use in drill presses, CNC machines, and hand drills across standard countersinking applications in metal, wood, and composite substrates.

Installation Notes

Countersinks should be installed and operated by qualified machinists or trade professionals familiar with rotating cutting tools. Secure the countersink firmly in the tool holder and ensure the workpiece is clamped before operation. Use appropriate cutting speed for the workpiece material — reduce speed for harder metals to extend tool life. Inspect flutes for wear or damage before each use and replace any tool showing chipping or excessive wear.