Harvey Tool 988804-C3 Thread Relief Cutter Solid Carbide

Product Description

The HARVEY TOOL 988804-C3 is a solid carbide thread relief cutter designed to machine undercuts and relief grooves at the base of threaded features on precision workpieces. With a cutting diameter of 0.084 inches and a flat width of 0.0200 inches, this tool produces narrow, well-defined relief channels that allow threaded fasteners and mating components to seat fully. The 3/16-inch shank diameter and 2-inch overall length make it compatible with standard collet-based toolholding setups on CNC mills and manual machines alike. Machinists and toolroom technicians working in aerospace, medical, and general precision machining rely on this type of cutter for consistent undercut geometry.

Thread relief cutters of this profile are used in applications where a standard threading tool cannot reach the thread runout zone without interference. The 988804-C3 is suited for both internal and external thread relief operations on small-diameter features. Its compact cutting geometry is particularly useful in close-quarter setups where tool clearance is limited and dimensional accuracy at the thread root is critical. Typical applications include precision shafts, threaded bores, and fixture components requiring a clean thread termination.

Key Features

• Solid carbide construction provides rigidity and wear resistance for precise, repeatable cuts
• 0.084 inch cutting diameter targets small-diameter thread relief applications
• 0.0200 inch flat width delivers a narrow, well-defined relief groove profile
• 3/16 inch shank diameter fits standard collet chucks and toolholders
• 2 inch overall length provides reach while maintaining tool stability

Compatibility

Designed as an OEM-style replacement and standard toolroom cutter for use in collet-based CNC and manual milling setups requiring small-diameter thread relief geometry.

Installation Notes

Installation and use of this cutter should be performed by a qualified machinist familiar with CNC or manual milling operations. Secure the shank fully in a properly sized collet or toolholder and verify runout before cutting. Power down and lock out the machine spindle before changing or inspecting the tool. Handle solid carbide tooling with care to avoid chipping the cutting edges during setup.