Cleveland C46439 pneumatic accessory 5.375" L .500" dia

Cleveland C46439 Port Tool

The Cleveland C46439 is a high-speed steel port tool designed for counterboring operations with interchangeable pilots. It suits machinists and maintenance technicians preparing precise seats in metal components. The bright finish indicates an uncoated ground surface. This accessory fits standard tool holders used in pneumatic or powered machining setups.

Replaces worn counterbores

This tool replaces a dull or damaged counterbore when hole quality degrades or pilot fit becomes loose. The jump is worth it when the existing cutter no longer produces a clean, flat-bottom seat for the intended fastener or insert. High-speed steel construction allows resharpening, extending service life before a full replacement is required. It upgrades performance in repetitive porting tasks.

Limited to pilot compatibility

The cutter diameter of .500 inch and overall length of 5.375 inches define the reach and bore size this tool can produce. It only accepts pilots matched to the specific counterbore shank and pilot hole dimensions. The high-speed steel material limits cutting speed compared to carbide in abrasive or high-temperature alloys. Rigidity decreases with deeper cuts beyond the supported length.