Value Collection CD60040 Solid Pilot Counterbore 3/4 in

Product Description

The VALUE COLLECTION CD60040 is a solid pilot counterbore designed for precision enlarging of drilled holes to accept fastener heads, dowels, and similar hardware. Built from cobalt steel with a bright, uncoated finish, this counterbore delivers strong cutting performance in ferrous and hard materials. It features a 3/4-inch counterbore diameter and a 21/32-inch pilot diameter, with a 31/32-inch straight-cylindrical shank for secure chuck or holder engagement. Forward cutting direction makes it suitable for standard drilling setups. Machinists and toolroom technicians typically specify this tool for production and maintenance drilling operations.

This counterbore is used in metalworking applications where a precise, flat-bottomed recess is required above a through or blind hole. Common scenarios include socket head cap screw seating, dowel pin spotting, and similar precision machining tasks on mill or drill press setups. The solid pilot design provides accurate hole alignment during cutting, reducing chatter and improving finish quality in both manual and CNC machining environments.

Key Features

• Cobalt steel construction for improved heat and wear resistance compared to standard HSS
• 3/4-inch counterbore diameter for accurate fastener-head recessing
• 21/32-inch solid pilot diameter for positive hole alignment during cutting
• 31/32-inch straight-cylindrical shank for reliable chuck or collet holding
• Bright, uncoated finish suitable for use with cutting fluids across a range of materials
• Forward cutting direction compatible with standard drill press and milling machine setups

Compatibility

Designed as a solid pilot counterbore for use in standard drill press, milling machine, or CNC drilling applications requiring a 3/4-inch counterbore and 21/32-inch pilot.

Installation Notes

Installation and operation should be performed by qualified machinists or toolroom personnel. Secure the 31/32-inch straight shank firmly in an appropriate chuck or collet before operation, and ensure the machine is fully powered down and locked out before changing or adjusting tooling. Use an appropriate cutting fluid for the workpiece material to extend tool life and improve surface finish. Follow applicable shop safety standards and machine manufacturer guidelines during all cutting operations.