Keo 919-000-217 Countersink Set 5 Pc Cobalt Steel 82 Deg

Product Description

The KEO 919-000-217 is a 5-piece countersink set made from cobalt steel, designed for countersinking operations in metal, wood, and composite materials. The set covers a head diameter range of 5/16 inch to 1 inch with a consistent 82-degree included angle across all five tools, making it suitable for standard flat-head fastener prep work. Shank diameters range from 1/4 inch to 3/8 inch, and overall lengths span 1-5/8 inches to 2-5/8 inches. All tools feature a straight shank, single-end construction, right-hand cutting direction, and a bright uncoated finish. The set ships in a plastic storage case.

This countersink set is used in machine shops, fabrication facilities, and maintenance environments where a range of countersink sizes is needed at a single workstation. The cobalt steel construction handles harder workpiece materials better than standard high-speed steel, making it a practical choice for stainless steel, alloy steels, and other tough materials. The five included countersinks cover the most common flat-head screw sizes encountered in general metalworking and assembly work.

Key Features

• 5-piece set covering head diameters from 5/16 inch to 1 inch
• 82-degree included angle for standard flat-head fastener countersinking
• Cobalt steel construction for improved performance on harder materials
• Straight shank, right-hand cutting, single-end design
• Shank diameters from 1/4 inch to 3/8 inch to fit a range of chucks and holders
• Bright uncoated finish; stored in a plastic case for organization and protection

Compatibility

Designed as an OEM-style countersink set for general countersinking applications in metalworking, fabrication, and assembly environments where standard 82-degree flat-head screw prep is required.

Installation Notes

Countersinks of this type are installed by machinists and maintenance technicians using drill presses, CNC machines, or hand-held power drills with appropriate chucks sized for the shank diameter. Power down all equipment before changing tooling and verify chuck tightness before operation. Select the appropriate countersink from the set based on the fastener head diameter and ensure the workpiece is properly fixtured before cutting.