Boneham PT284HB Press Fit Headless Drill Bushing

Product Description

The BONEHAM PT284HB is a press fit headless drill bushing designed to guide drill bits and cutting tools with precision in jig and fixture applications. Built to Industry Code P standards, it features a 0.242 inch inside diameter, a 7/16 inch body outside diameter, and a 1/4 inch overall length. Manufactured from steel, this bushing is installed directly into a drill jig plate without a head, resulting in a flush-mount profile that keeps the bushing below the jig surface. The inside diameter holds a tolerance of plus 0.0001 to plus 0.0004 inches, ensuring consistent hole placement and repeatable results across production runs.

This bushing is suited for use in metalworking, toolmaking, and precision machining environments where controlled drill guidance is required. It is a non-renewable type, meaning it is permanently pressed into the jig body rather than swapped out during production. Typical applications include drill jigs, fixture plates, and tooling setups in machine shops, job shops, and manufacturing operations. Installation is performed by toolmakers, machinists, or fixture builders working with drill jig assemblies.

Key Features

• Press fit installation method for permanent, secure seating in jig plates
• Headless design provides a flush profile with no head projecting above the jig surface
• Inside diameter tolerance of plus 0.0001 to plus 0.0004 inches for precise drill guidance
• Steel construction for durability in production drilling environments
• Industry Code P designation for standardized fitment in compatible jig plates
• Compact 1/4 inch overall length suited for thin jig plate applications

Compatibility

Designed as an OEM-style replacement or new-installation drill bushing for press fit headless applications conforming to Industry Code P dimensional standards.

Installation Notes

Press fit headless drill bushings are installed by machinists or toolmakers using an arbor press or hydraulic press to seat the bushing flush into a prepared jig plate bore. Ensure the receiving bore in the jig plate is machined to the correct interference fit tolerance before pressing to avoid bushing damage or improper seating. Do not hammer the bushing in directly without a proper pressing tool, as this can distort the bore geometry. This is a non-renewable bushing and is not intended for removal and reinstallation once pressed.