Boneham P648MZ Press Fit Headless Drill Bushing

Product Description

The BONEHAM P648MZ is a press fit headless drill bushing designed to guide drill bits with precision in jig and fixture applications. Manufactured from steel, this bushing features a 47/64 inch inside diameter and a 1 inch outside diameter, with an overall length of 1/2 inch. The headless design allows flush installation where a flanged head would interfere with the workpiece or fixture plate. Inside diameter tolerance is held to +0.0001 to +0.0005 inches, ensuring consistent hole location across repeated drilling operations. This bushing carries the industry code P, indicating its dimensional series classification within standard drill bushing specifications.

This bushing is used in production drilling fixtures, jig plates, and tooling setups in machine shops and fabrication environments. It is installed by pressing directly into a bored hole in a drill jig plate, where it remains fixed during drilling operations. The close-tolerance bore guides the cutting tool and reduces wander, making it appropriate for applications requiring repeatable hole placement in steel, aluminum, or other machinable materials.

Key Features

• 47/64 inch inside diameter with +0.0001 to +0.0005 inch ID tolerance for precise drill guidance
• 1 inch outside diameter for press fit retention in the jig plate
• 1/2 inch overall length suits thin fixture plate installations
• Headless design allows flush seating without protruding flanges
• Steel construction provides wear resistance in repetitive drilling applications
• Non-renewable design — intended as a fixed, permanent bushing installation

Compatibility

Designed as an OEM-style replacement or standard-fitment drill bushing for jig plates and fixtures requiring a P-series press fit headless bushing with a 47/64 inch bore and 1 inch outside diameter.

Installation Notes

Press fit bushings are installed by a toolmaker or machinist using an arbor press or hydraulic press — never hammer directly on the bushing face, as this can damage the bore or distort the OD. The receiving hole in the jig plate must be finish-bored or reamed to the correct interference fit tolerance before installation. Once pressed in, the bushing is not intended to be removed or reused. Verify bore concentricity and plate surface condition before pressing to ensure proper seating.