Boneham PT366IZ Press Fit Headless Drill Bushing

Product Description

The BONEHAM PT366IZ is a press fit headless drill bushing designed to guide cutting tools accurately during drilling, reaming, and boring operations. Manufactured from steel with a hardness of 60 to 65 HRC, this bushing delivers consistent bore alignment and long service life in production and tooling applications. The headless design sits flush with the jig plate surface, making it well suited for setups where a protruding head would interfere with the workpiece or fixture. It carries an inside diameter of 0.339 inches with a tolerance of plus 0.0001 to plus 0.0005 inches, ensuring tight positional accuracy for drill guidance.

This bushing is intended for use in drill jigs and fixtures in machine shops, toolrooms, and manufacturing environments. The press fit installation method allows it to be driven permanently into a prepared hole in the jig body without additional hardware. With a body outside diameter of 9/16 inches and an overall length of 3/8 inches, it is sized for light- to medium-duty fixture applications. Machinists, toolmakers, and fixture builders are the primary installers in both job shop and production settings.

Key Features

• Headless design sits flush with jig plate — no protruding head to interfere with workpiece contact
• Press fit installation for permanent, hardware-free mounting in jig bodies
• Steel construction hardened to 60 to 65 HRC for extended wear resistance
• Inside diameter tolerance of plus 0.0001 to plus 0.0005 inches for precise drill guidance
• Meets ANSI standards for drill bushing dimensions and fitment
• Non-renewable (fixed) bushing — intended for permanent installation

Compatibility

Designed as an ANSI-standard press fit headless drill bushing with a P-series industry code, suitable for use in standard drill jig fixtures requiring a 9/16-inch OD press fit bore and 0.339-inch ID tool guidance.

Installation Notes

Installation is performed by toolmakers or machinists using an arbor press or hydraulic press to drive the bushing into a precisely reamed hole in the jig plate. The receiving hole in the jig body must be sized to the appropriate press fit tolerance for a 9/16-inch OD bushing before installation. Once pressed in, this bushing is not designed for removal or replacement. Always ensure the jig plate is properly supported and the bushing is started square to the bore before applying press force.