Boneham P326HU Press Fit Headless Drill Bushing

Product Description

The BONEHAM P326HU is a press fit headless drill bushing used to guide cutting tools accurately during drilling, reaming, and similar machining operations. Built from steel with a hardness rating of 60 to 65 HRC, this bushing delivers reliable wear resistance in production jig and fixture applications. The inside diameter measures 0.277 inches with a tolerance of +0.0001 to +0.0005 inches, providing close control over tool guidance. The body outside diameter is 0.500 inches and the overall bushing length is 0.375 inches. The headless design allows the bushing to sit flush within the jig plate, keeping the work surface clear. Machinists and tool and die makers install this component as part of drill jig assemblies in both short-run and high-volume manufacturing environments.

This bushing is suited for use in drill jigs and fixture plates where precise hole location is required. The press fit installation method secures the bushing permanently into a prepared bore in the jig body without the use of a locking collar or head flange. Typical applications include metalworking, fabrication, and precision machining shops. The industry code P designation identifies the bushing series and corresponds to standard ANSI dimensional specifications, making it straightforward to source as a direct replacement within that series.

Key Features

• Press fit installation for permanent, collar-free mounting in jig plates
• Headless design provides a flush, unobstructed work surface
• Steel construction with 60 to 65 HRC hardness for extended wear life
• Inside diameter tolerance of +0.0001 to +0.0005 inches ensures consistent tool guidance
• Meets ANSI standards for drill bushing dimensional requirements
• Bushing industry code P for straightforward series identification and replacement

Compatibility

Designed as an ANSI-standard press fit headless drill bushing for use in drill jigs and fixture assemblies requiring a 0.277 inch inside diameter and 0.500 inch outside diameter in the P bushing series.

Installation Notes

Press fit bushings are installed by machinists or toolmakers using an arbor press to drive the bushing into a properly sized and finished bore in the jig plate. The receiving bore must be machined to the correct interference fit tolerance before installation. Do not use impact tools that may crack or distort the bushing. Once installed, press fit bushings are not intended to be removed and reused.