Osg 706-3750-090 Countersink 3/8 in 90 Deg Solid Carbide

Product Description

The OSG 706-3750-090 is a solid carbide countersink designed for deburring and chamfering operations in metalworking applications. It features a 3/8 inch (9.53 mm) head diameter with a 90-degree included angle and a straight-cylindrical 1/4 inch shank. The bright, uncoated finish is standard for this carbide tool. Solid carbide construction provides rigidity and wear resistance suited to high-speed cutting in ferrous and non-ferrous metals. This is a single-end tool without a pilot, making it appropriate for use in a drill press, CNC machining center, or hand-held drill with appropriate fixturing.

The 706-3750-090 is suited for countersinking operations across a range of common metalworking materials including alloy steel, low-carbon steel, medium-carbon steel, cast iron, aluminum, and cast aluminum. The 90-degree included angle matches standard flat-head fastener geometry, making it a practical choice for machine shops, manufacturing facilities, and maintenance environments where precise, consistent chamfers are required across production or repair work.

Key Features

• Solid carbide construction for rigidity and extended tool life in ferrous and non-ferrous metals
• 90-degree included angle sized for standard flat-head fastener countersink profiles
• 3/8 inch (9.53 mm) head diameter with a straight-cylindrical 1/4 inch shank
• Right-hand cutting direction compatible with standard spindle rotation
• Single-end, no-pilot design for use across drill presses, CNC machines, and hand-held drilling equipment
• Bright uncoated finish suitable for general-purpose metalworking

Compatibility

Rated for use in alloy steel, low-carbon steel, medium-carbon steel, cast iron, aluminum, and cast aluminum. Designed as an OEM-style single-end countersink for standard 1/4 inch shank toolholders and collets.

Installation Notes

Installation and use of this countersink should be performed by qualified machinists or tooling technicians familiar with rotating cutting tools. Ensure the spindle is fully stopped and the machine is powered down before loading or removing the tool from the collet or chuck. Secure the 1/4 inch straight-cylindrical shank firmly in a properly sized collet or Jacobs chuck before operation. Always wear appropriate eye protection and follow shop safety protocols when operating cutting tools at speed.