Boneham PT286HG Press Fit Headless Drill Bushing

Product Description

The BONEHAM PT286HG is a press fit headless drill bushing used to guide drill bits and cutting tools with precision in jig and fixture applications. Manufactured from steel with a hardness of 60 to 65 HRC, this bushing delivers consistent bore alignment and long service life under repeated use. It carries an inside diameter of 0.25 inches and a body outside diameter of 7/16 inches, with an overall bushing length of 3/8 inches. The headless design allows flush installation in close-clearance setups where a headed bushing would interfere. Inside diameter tolerance is held to +0.0001 to +0.0004 inches for tight, repeatable tool guidance. Licensed machinists, toolmakers, and production technicians install this component in drill jigs and fixture plates.

This bushing is suited for use in production drilling, reaming, and boring operations where positional accuracy is required. It is appropriate for both light manufacturing and heavy production environments. The press fit installation method secures the bushing directly into a jig plate bore without additional fasteners, making it a compact and permanent solution. The industry code designation P identifies this as a standard press fit headless type per ANSI specifications, allowing straightforward cross-referencing in jig design work.

Key Features

• Press fit installation — no fasteners required for secure seating in jig plate
• Headless design allows flush, low-profile mounting in tight fixture layouts
• Steel construction hardened to 60 to 65 HRC for wear resistance under repeated drill cycling
• Inside diameter tolerance of +0.0001 to +0.0004 inches ensures precise tool guidance
• Meets ANSI standards; bushing industry code P for consistent cross-referencing
• Non-renewable (fixed) design — intended as a permanent press-in installation

Compatibility

Designed as an OEM-style replacement and standard component for use in ANSI-compliant drill jig plates and fixture assemblies requiring a press fit headless bushing with a 0.25 inch inside diameter and 7/16 inch outside diameter.

Installation Notes

Installation is typically performed by a toolmaker or machinist using an arbor press to drive the bushing flush into the prepared jig plate bore. The receiving bore should be machined to the correct press fit tolerance before installation to avoid bushing distortion or bore damage. Once pressed in, this bushing is not designed for removal and reuse. Verify bore cleanliness and alignment before pressing to ensure concentricity and accurate tool guidance.