Boneham P4816LP Press Fit Headless Drill Bushing

Product Description

The BONEHAM P4816LP is a headless press fit drill bushing used to guide drill bits and other cutting tools with precision during machining and fabrication operations. Manufactured from steel and hardened to 60 to 65 HRC, this bushing maintains tight bore tolerances of +0.0001 to +0.0005 inches to ensure repeatable hole location accuracy. With a 33/64 inch inside diameter, a 3/4 inch outside diameter, and an overall length of 1 inch, it installs directly into a drill jig or fixture plate without a head flange, keeping the top surface flush. Machinists, toolmakers, and fixture builders rely on this style of bushing in production and prototype environments alike.

The P4816LP is suited for use in drill jigs, fixture plates, and tooling assemblies where a permanent, flush-mount bushing is required. Its headless profile makes it the correct choice when clearance above the workpiece surface is limited or when multiple bushings must be installed in close proximity. The press fit installation method locks the bushing in place without fasteners, making it appropriate for moderate-to-high production volume applications in metal fabrication shops and machine shops.

Key Features

• Hardened steel construction at 60 to 65 HRC for long service life under repeated drilling cycles
• Inside diameter tolerance of +0.0001 to +0.0005 inches for consistent hole location repeatability
• Headless design provides a flush top surface when installed in jig plate
• Press fit installation method eliminates need for additional fasteners or locking hardware
• Meets ANSI standards for drill bushing dimensions and tolerances
• Bushing Industry Code P for straightforward cross-referencing and replacement sourcing

Compatibility

Designed as an OEM-style replacement or direct fit for drill jigs and fixture plates requiring a headless press fit bushing with a 33/64 inch bore and 3/4 inch outside diameter, conforming to ANSI bushing standards.

Installation Notes

Press fit drill bushings are typically installed by toolmakers or machinist tradespeople using an arbor press to seat the bushing flush and square within the jig plate bore. The receiving hole in the fixture plate must be machined to the correct interference fit diameter before installation to prevent bushing movement during operation. Inspect the bushing bore and the jig plate hole for burrs or contamination before pressing to avoid damage to the tolerance surfaces. Once pressed in, this bushing is not designed for removal and reinstallation.