Value Collection BC11P0004 Combo Drill Countersink Cobalt

Product Description

The VALUE COLLECTION BC11P0004 is a combination drill and countersink designed for creating pilot holes and countersunk seats in a single pass. Made from cobalt tool steel with a bright, uncoated finish, this right-hand-cut tool handles harder materials where standard high-speed steel bits fall short. It features a 90-degree included angle, a 5/16 inch body diameter, and a plain cutting edge style. Machinists, fabricators, and maintenance technicians use this tool for fast, accurate countersinking on ferrous and non-ferrous workpieces in production and repair environments.

This combo drill countersink is suited for general metalworking applications requiring a size 4 trade size tool. The double-end design extends tool life by providing two usable cutting ends before replacement is needed. At 2-1/8 inches overall length with a 1/8 inch point diameter and 1/8 inch point length, it fits standard drill press and CNC machine tool holders used in light manufacturing, sheet metal work, and machine shop operations.

Key Features

• Cobalt tool steel construction for improved hardness and heat resistance over standard HSS
• 90-degree included angle suits common flathead screw countersinking
• Double-end design provides two cutting ends for extended service life
• Bright, uncoated finish for general-purpose metalworking use
• Right-hand cut compatible with standard drill presses and CNC spindles
• Plain cutting edge style for clean, consistent countersink geometry

Compatibility

Designed as an OEM-style replacement or standard tooling option for size 4 combo drill countersink applications in metalworking and fabrication equipment accepting 5/16 inch body diameter tooling.

Installation Notes

This tool is installed and operated by machinists or tooling technicians in drill press, mill, or CNC machine setups. Secure the tool firmly in the appropriate collet or chuck before operation and confirm spindle speed is appropriate for the workpiece material and tool diameter. Power down and lock out the machine before changing or inspecting tooling. Do not use on workpieces without adequate workholding to prevent spinning or shifting during the cut.