Boneham PT288HU Press Fit Headless Drill Bushing

Product Description

The BONEHAM PT288HU is a press fit headless drill bushing designed to guide drill bits with precision in jig and fixture applications. With an inside diameter of 0.277 inches (Letter size J, Industry Code P), a body outside diameter of 7/16 inch, and an overall length of 1/2 inch, this bushing provides accurate hole location and consistent drill guidance in production drilling operations. Constructed from steel, it is pressed directly into a drill jig plate without a head flange, keeping the bushing flush with the jig surface. It is a non-renewable, fixed-installation type suitable for repetitive, high-volume drilling setups.

This bushing is used in metal fabrication, machine shops, and manufacturing environments where repeatable hole placement is critical. It fits into a prepared jig plate bore and is installed using a press — no locking collar or liner bushing is required. Headless design makes it the right choice when the work surface must sit flat against the jig plate with no clearance for a head flange. Typical users include toolmakers, machinists, and manufacturing engineers setting up drill fixtures for production runs.

Key Features

• Press fit installation — no liner bushing or locking collar required
• Headless design allows workpiece to sit flush against jig plate surface
• Inside diameter: 0.277 inches (Letter J) with tight tolerance of +0.0001 to +0.0005 inches
• Body outside diameter: 7/16 inch; overall length: 1/2 inch
• Steel construction for durability in repetitive drilling applications
• Industry Code P for standard jig bushing interchangeability

Compatibility

Designed as a standard Industry Code P press fit headless drill bushing for use in drill jig plates with a mating bore sized to accept a 7/16 inch outside diameter press fit bushing.

Installation Notes

Installation is performed by a toolmaker or machinist using an arbor press or hydraulic press — never hammer directly onto the bushing face. The receiving bore in the jig plate must be machined to the appropriate interference fit tolerance to ensure the bushing seats securely and does not rotate or walk during drilling. Verify the jig plate is properly fixtured and supported before pressing to prevent bore damage or misalignment.