Boneham P3222IM Press Fit Headless Drill Bushing

Product Description

The BONEHAM P3222IM is a press fit headless drill bushing designed to guide drill bits and other cutting tools with precision during machining operations. This bushing features a 5/16-inch (0.3125-inch) inside diameter and a 1/2-inch outside diameter, with an overall length of 1-3/8 inches. Constructed from steel and hardened to 60 to 65 HRC, it delivers the wear resistance required for repeated drill cycles. The headless profile sits flush with the jig plate surface, making it well suited for applications where a protruding head would interfere with the workpiece or fixture setup. Installation is accomplished by press fitting the bushing into a prepared jig plate bore.

This bushing is intended for use in drill jigs, fixture plates, and production tooling setups where consistent hole location is critical. It is appropriate for metalworking, fabrication, and general machining environments. The P industry code designation indicates a specific standardized outside diameter and tolerance class per ANSI specifications, allowing it to be used alongside other P-series jig bushing components. Licensed machinists, tool and die makers, and fixture builders are the typical installers in both job shop and production settings.

Key Features

• Press fit installation method for secure, permanent seating in jig plate bores
• Headless design provides a flush profile that eliminates interference with workpiece contact surfaces
• Steel construction hardened to 60 to 65 HRC for extended service life under high-cycle drilling
• Inside diameter tolerance of +0.0001 to +0.0005 inches ensures precise tool guidance
• Counterbored body accommodates standard jig plate configurations
• Meets ANSI standards for P-series drill bushings

Compatibility

Designed as an OEM-style replacement or new-installation component for P-series ANSI drill jig bushing applications requiring a 5/16-inch inside diameter and 1/2-inch outside diameter headless press fit bushing.

Installation Notes

Press fit bushings are installed by a machinist or toolmaker using an arbor press or hydraulic press into a precision-reamed hole in the jig plate. The receiving bore must be machined to the correct tolerance for the P-series outside diameter to achieve proper interference fit. De-burr the bore and ensure the plate is secure before pressing. Once seated, press fit bushings are considered permanent and are not intended to be removed and reused.