Osg 706-2500-060 Carbide Countersink 1/4 in 60 Degree

Product Description

The OSG 706-2500-060 is a single-flute carbide countersink designed for deburring and chamfering operations on a wide range of metallic workpieces. It features a 1/4 inch head diameter and a 60-degree included angle, making it suited for applications that require a sharper chamfer profile. The straight cylindrical shank measures 1/4 inch in diameter for direct chuck mounting. The bright uncoated carbide construction delivers hardness and wear resistance across ferrous and non-ferrous materials. Machinists and tool-and-die tradespeople use this countersink in drill press, CNC, and manual milling setups where precision seat geometry matters.

This countersink is intended for use on alloy steel, low-carbon steel, medium-carbon steel, cast iron, aluminum, and cast aluminum. It performs countersinking operations without a pilot, relying on operator setup for concentricity control. The right-hand cutting direction is standard for conventional spindle rotation. It is sold as a single piece and is appropriate for both production runs and individual machining tasks where a 60-degree seat angle is specified by the drawing or fastener requirement.

Key Features

• 1/4 inch head diameter with a 60-degree included angle for precise chamfer geometry
• Solid carbide construction provides hardness and edge retention on steel and aluminum
• Bright uncoated finish suitable for use across a broad range of material applications
• Straight cylindrical 1/4 inch shank fits standard collets and drill chucks
• Single-end, no-pilot design for versatile setup in drill press or CNC spindles
• Right-hand cut for conventional spindle rotation

Compatibility

Designed for countersinking operations on alloy steel, low-carbon steel, medium-carbon steel, cast iron, aluminum, and cast aluminum workpieces where a 60-degree included angle is required.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with rotating cutting tool safety. Secure the straight shank firmly in a collet or drill chuck rated for the spindle speed being used. Power down and lock out the machine before changing or inspecting the countersink. Do not exceed the recommended spindle speed for carbide tooling in the material being cut, and use appropriate cutting fluid where applicable.