Boneham P4012JR Press Fit Headless Drill Bushing

Product Description

The BONEHAM P4012JR is a press fit headless drill bushing designed to guide drill bits and other cutting tools with precision in production drilling operations. This is an Industry Code P bushing with an inside diameter of 0.377 inches, a body outside diameter of 5/8 inches, and an overall length of 3/4 inches. Manufactured from steel with a hardness rating of 60 to 65 HRC, this bushing provides the wear resistance required for sustained use in jig plates and fixture tooling. It is a permanent, non-renewable bushing installed without a head for flush or sub-flush mounting applications.

This bushing is used in industrial manufacturing, machine shop, and toolroom environments where repeatable hole location accuracy is critical. It seats directly into a drill jig or fixture plate using a press fit installation method, eliminating the need for a locking collar or retaining hardware. Typical users include machinist tool builders, fixture engineers, and production floor personnel working on metal fabrication setups.

Key Features

• Press fit installation — no locking collar or set screw required
• Headless design allows flush or sub-flush seating in jig plates
• Inside diameter of 0.377 inches to 0.3775 inches within tolerance (+0.0001 to +0.0005 inches)
• Steel construction hardened to 60 to 65 HRC for wear resistance
• Non-renewable fixed bushing for permanent fixture applications
• Meets ANSI standards for drill bushing dimensions and tolerances

Compatibility

Designed as an OEM-style replacement or direct-fit bushing for drill jigs and fixture plates requiring an Industry Code P press fit headless bushing with a 0.377 inch ID and 5/8 inch OD.

Installation Notes

Installation is performed by a machinist or toolroom professional using a hydraulic or arbor press to seat the bushing into a properly reamed hole in the jig plate. Power down and lock out any associated machine tool before servicing a fixture. Do not hammer the bushing directly without a proper driver to avoid distorting the bore or damaging the seating surface. Verify hole diameter in the jig plate matches the bushing OD tolerance before pressing to ensure proper interference fit.