Boneham PT284HN Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM PT284HN is a headless, press fit drill bushing designed to guide drill bits and other cutting tools with precision in jig and fixture applications. Manufactured from steel and assigned industry code P, this bushing features a 17/64-inch inside diameter and a 7/16-inch body outside diameter. The inside diameter tolerance is held to a tight +0.0001 to +0.0005 inches, ensuring accurate hole location and consistent repeatability across production runs. With an overall length of 1/4 inch, the PT284HN is suited for applications where a low-profile, flush-mount bushing is required. Machinists, tool and die makers, and fixture builders install this type of component in drill jigs to control drill alignment and protect the workpiece.

This bushing is used in metalworking and machining environments where repeatable hole placement is critical. Typical applications include production drilling jigs, assembly fixtures, and quality inspection tooling in both light manufacturing and heavy industrial settings. The headless design allows the bushing to sit flush within a bored hole in the jig plate, making it appropriate for tight clearance layouts where a flanged or headed bushing would interfere with tooling or workpiece travel. It is not a renewable bushing and is pressed permanently into the jig plate during installation.

Key Features

• Press fit installation method for permanent, secure seating in jig plate bores
• Headless design provides a flush, low-profile fit suitable for tight-clearance fixture layouts
• 17/64-inch inside diameter with a tight tolerance of +0.0001 to +0.0005 inches for precise drill guidance
• 7/16-inch body outside diameter and 1/4-inch overall length for compact fitment
• Steel construction for durability in production drilling applications
• Assigned bushing industry code P for straightforward cross-reference and specification

Compatibility

Designed as an OEM-style replacement or new-installation component for drill jigs and fixtures requiring a P-series headless press fit bushing with a 17/64-inch inside diameter and 7/16-inch outside diameter per industry standard classifications.

Installation Notes

Press fit bushings are typically installed by machinists or tool and die makers using an arbor press or hydraulic press to drive the bushing flush into a precisely bored jig plate hole. The receiving bore in the jig plate must be sized to the bushing's specified outside diameter tolerance to achieve proper interference fit. Do not strike the bushing directly with a hammer, as this can damage the bore or distort the bushing. Verify inside diameter alignment with the intended drill size before pressing the bushing into service.