Hertel HCH70012K Combo Drill Countersink Set 5 Pc

Product Description

The HERTEL HCH70012K is a 5-piece combination drill and countersink set machined from high speed steel. Each tool in the set performs both drilling and countersinking in a single pass, reducing tool changes and setup time on the bench or in the field. The set covers trade sizes 1 through 5 and features a 60-degree included angle with a plain edge cutting geometry. This configuration produces clean, consistent countersunk holes suited to flathead fastener seating in metal, wood, and composite materials. The set is packaged as a single unit and is intended for use by machinists, fabricators, and trade professionals working with a range of fastener sizes.

This set is a practical addition to any shop or service vehicle where countersinking is performed regularly. The range of sizes from 1 to 5 covers the most common trade-size fastener applications encountered in light fabrication, electrical panel work, and general mechanical assembly. High speed steel construction maintains edge integrity through repeated use in standard drilling operations without the need for carbide tooling.

Key Features

• 5-piece set covering trade sizes 1 through 5 in a single kit
• High speed steel construction for durability across standard drilling applications
• 60-degree included angle for consistent flathead fastener seating
• Plain edge cutting geometry for smooth, controlled material removal
• Combination drill and countersink design performs two operations in one pass

Compatibility

Designed as a general-purpose combination drill and countersink set compatible with standard drill chucks accepting the shank diameters corresponding to trade sizes 1 through 5.

Installation Notes

Install each bit securely in a compatible drill press or hand drill chuck before use. Secure the workpiece firmly before drilling to prevent movement and maintain hole accuracy. Use appropriate cutting fluid when drilling ferrous metals to extend tool life. Follow all applicable shop safety practices including eye protection when operating rotary cutting tools.