Boneham P488JJ Press Fit Headless Drill Bushing

Product Description

The BONEHAM P488JJ is a headless, press fit drill bushing designed to guide cutting tools with precision in jig and fixture applications. With an inside diameter of 23/64 inches and a body outside diameter of 3/4 inches, this bushing maintains tight bore tolerances for consistent hole location across production runs. The inside diameter tolerance is held to +0.0001 to +0.0005 inches, which is standard for precision tooling work. Constructed from steel, the P488JJ provides the hardness and wear resistance required for repetitive drilling, reaming, or boring operations. It installs without a head, keeping the profile flush with the jig plate surface.

This bushing is suited for use in drill jigs, fixture plates, and tooling setups in manufacturing and machining environments. The headless design is commonly chosen when a flush mounting surface is required or when clearance above the jig plate is limited. At 1/2 inch overall length, the P488JJ fits compact jig plate thicknesses while still providing adequate tool guidance. It is non-renewable, meaning it is pressed permanently into the jig plate and is not intended for field swap-out. Machinists, toolmakers, and fixture builders are the primary installers of this component.

Key Features

• Press fit installation method for permanent, secure seating in jig plates
• Headless design provides a flush profile above the jig plate surface
• Inside diameter tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• Steel construction offers hardness and wear resistance for high-cycle use
• 23/64 inches ID and 3/4 inches OD with 1/2 inch overall bushing length
• Bushing Industry Code P for standard interchangeability reference

Compatibility

Designed as a standard P-series press fit headless drill bushing for use in drill jigs and fixture plates requiring a 3/4 inch diameter bore and 23/64 inch tool guidance diameter.

Installation Notes

Installation requires pressing the bushing into a precisely bored hole in the jig plate using an arbor press or hydraulic press. The receiving bore in the jig plate must be machined to the correct interference fit tolerance before installation. Once pressed in, the bushing is not intended for removal or reuse. Handle the bushing carefully prior to installation to avoid damage to the precision-ground inside diameter.