Keo 76050 Hss Combo Drill Countersink Set 5 Pc 11-15

Product Description

The KEO 76050 is a five-piece high-speed steel combination drill and countersink set covering trade sizes 11 through 15. Each tool combines the drilling and countersinking operation into a single pass, reducing setup time and tool changes on the shop floor or at the job site. The set features a 60-degree included angle with a bell-edge cutting style, which produces a clean, consistent countersink profile suited to fastener seating in metal fabrication and general machining work. Right-hand cutting direction is standard across all five pieces. Installed by machinists, tool-and-die workers, and fabricators working with drill presses, lathes, or CNC equipment.

This set is appropriate for general metalworking applications where combo drills in the size 11 to 15 range are required. The bell-edge geometry is well suited to centering work and producing countersunk holes for flat-head fasteners in ferrous and non-ferrous materials. The five-piece range gives a tech coverage across multiple shaft diameters without purchasing individual tools. Typical use cases include production machining, maintenance and repair operations, and light fabrication shops.

Key Features

• High-speed steel construction for durability across ferrous and non-ferrous materials
• 60-degree included angle for standard countersink fastener seating
• Bell-edge cutting style for clean entry and consistent hole geometry
• Right-hand cutting direction, compatible with standard spindle rotation
• Five-piece set covering trade sizes 11 through 15

Compatibility

Designed as a standard combination drill and countersink set for use in drill presses, lathes, and CNC machining centers accepting trade-size combo drill tooling in the size 11 to 15 range.

Installation Notes

Combo drill countersinks are installed by machinists and fabricators in rotating spindle equipment. Secure the tool firmly in the chuck or collet before operation and verify spindle speed is appropriate for the workpiece material and tool diameter. Inspect cutting edges before use and replace any tool showing chipping or excessive wear. Follow applicable shop safety standards and equipment manufacturer guidelines during setup and operation.