Boneham P6422MK Press Fit Headless Drill Bushing

Product Description

The BONEHAM P6422MK is a press fit headless drill bushing designed to guide cutting tools accurately during drilling, reaming, and boring operations. Carrying the industry code P, this bushing features an inside diameter of 41/64 inches with a tight tolerance of +0.0001 to +0.0005 inches, ensuring precise tool guidance and repeatable hole location. The body outside diameter measures 1 inch, and the overall length is 1-3/8 inches. Machined from steel, it delivers the hardness and wear resistance required for production jig applications. Installation requires pressing the bushing directly into a jig plate without a retaining head, keeping the flush profile that many fixture designs demand.

This bushing is suited for use in drill jigs and fixture plates found in metal fabrication shops, machine shops, and production manufacturing environments. The headless design keeps the bushing body flush with or below the jig plate surface, which is ideal when workpiece clearance is limited or when a clean plate face is required. Toolmakers, machinists, and fixture builders typically install this component during jig assembly or as a replacement in existing production tooling.

Key Features

• Press fit installation method for secure, permanent seating in jig plates
• Inside diameter of 41/64 inches with +0.0001 to +0.0005 inch tolerance for accurate tool guidance
• Body outside diameter of 1 inch and overall length of 1-3/8 inches
• Headless design provides a flush surface profile in the jig plate
• Steel construction for wear resistance in repetitive drilling applications
• Non-renewable bushing intended for permanent installation

Compatibility

Designed as an OEM-style replacement or new-installation drill bushing for standard P-series headless press fit applications in machining jigs and fixture plates.

Installation Notes

Installation is performed by toolmakers or machinists using an arbor press or hydraulic press to seat the bushing flush within the jig plate bore. Ensure the receiving bore is machined to the correct interference fit tolerance before pressing to avoid bushing distortion. Do not use a hammer to drive the bushing, as uneven force can damage the bore or alter the inside diameter geometry. Once pressed in, this bushing is not designed for removal or reuse.