Boneham P4012JQ Press Fit Headless Drill Bushing

Product Description

The BONEHAM P4012JQ is a press fit headless drill bushing designed to guide drill bits and cutting tools with precision in jig and fixture applications. Built to ANSI standards, this bushing features a 3/8 inch inside diameter, a 5/8 inch outside diameter, and an overall length of 3/4 inch. Manufactured from steel hardened to 60 to 65 HRC, it provides the wear resistance and dimensional stability required in production drilling operations. The inside diameter is held to a tight tolerance of +0.0001 to +0.0005 inches, ensuring consistent hole location and tool guidance across repeated cycles.

This bushing is suited for use in drill jigs, fixture plates, and tooling setups in machine shops, manufacturing facilities, and production environments. It installs directly into a prepared hole in the jig body without a locking head, making it appropriate for applications where the bushing must sit flush with or below the jig plate surface. The headless design is common in close-tolerance setups where clearance above the plate is limited. Machinists, toolmakers, and fixture builders are the primary installers.

Key Features

• Press fit installation method for secure, permanent seating in jig plates
• Headless design allows flush or sub-flush mounting where clearance is limited
• Steel construction hardened to 60 to 65 HRC for extended wear life
• Inside diameter tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• Meets ANSI standards for drill bushing geometry and fitment
• Non-renewable design intended for fixed, permanent installations

Compatibility

Designed as an ANSI-standard press fit headless drill bushing for use in drill jigs and fixture plates requiring a 3/8 inch bore and a 5/8 inch body outside diameter.

Installation Notes

Press fit bushings are installed by toolmakers or machinists using an arbor press or hydraulic press to drive the bushing into a precisely reamed hole in the jig body. The receiving hole must be machined to the correct interference fit tolerance per ANSI specifications before installation. Once pressed in, this bushing is not designed for removal or replacement. Always verify bore alignment with the fixture plate before pressing to final depth.