Boneham P4816JJ Headless Drill Bushing 23/64 in Id Steel

Product Description

The BONEHAM P4816JJ is a press fit headless drill bushing engineered to guide cutting tools with tight positional accuracy during drilling, reaming, and boring operations. Manufactured from steel, this bushing features a 23/64-inch inside diameter, a 3/4-inch body outside diameter, and a 1-inch overall length. The headless profile sits flush with the jig plate surface, making it well suited for applications where clearance above the plate is restricted or where a smooth top surface is required. Installation is accomplished by pressing the bushing directly into the jig body without the need for a locking collar or head flange. Machinists and toolmakers specify this style when setting up hardened drill jigs for production runs.

This bushing is used in machine shop and manufacturing environments where repeatable hole location is critical. It is appropriate for both light-duty prototype fixtures and higher-volume production drill jigs operating on drill presses, CNC machining centers, and manual mill setups. The press fit installation method provides a permanent, non-renewable mount, making it the correct choice when the bushing position will not need to be changed during the life of the jig. Toolmakers, fixture builders, and precision machining technicians are the primary installers.

Key Features

• 23/64-inch inside diameter with a tight tolerance of +0.0001 to +0.0005 inches for accurate tool guidance
• 3/4-inch body outside diameter for secure press fit retention in the jig plate
• 1-inch overall length provides adequate support and guidance along the cutting tool shank
• Headless design sits flush with the jig plate surface, eliminating head clearance issues
• Steel construction offers durability and wear resistance under repeated tool contact
• Non-renewable press fit installation for permanent, fixed-position jig setups

Compatibility

Designed as an OEM-style replacement or new-build component for standard drill jig plates that accept press fit headless bushings conforming to Bushing Industry Code P specifications.

Installation Notes

Press fit bushings are installed by toolmakers or machinist-level personnel using an arbor press or hydraulic press sized to the bushing OD. The jig plate bore must be machined to the appropriate press fit tolerance before installation to achieve proper retention. Once pressed in, this bushing is not intended for removal or reuse. Always ensure the jig plate is secured and properly supported during pressing to prevent distortion or misalignment.