Boneham P328FU Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM P328FU is a press fit headless drill bushing designed to guide drill bits and other cutting tools with precision during machining and fabrication operations. Built to ANSI standards, this Industry Code P bushing features a 0.189 inch (wire size 12) inside diameter and a 0.5 inch outside diameter, with an overall length of 0.5 inches. Hardened to 60 to 65 HRC, it resists wear under repeated drilling cycles. The headless profile seats flush with the jig plate surface, making it well suited for applications where a protruding head would interfere with workpiece movement or fixturing.

This bushing is installed in drill jigs and fixture plates used in metalworking, tool-and-die, and precision manufacturing environments. It is a fixed, non-renewable bushing intended for permanent press fit installation into a jig body. Machinists, toolmakers, and fixture builders working with repetitive hole-location requirements will find this bushing appropriate for maintaining consistent positional accuracy across production runs in both job shop and production floor settings.

Key Features

• Industry Code P headless design seats flush for unobstructed workpiece handling
• 0.189 inch ID with inside diameter tolerance of +0.0001 to +0.0004 inches for precise tool guidance
• 0.5 inch OD and 0.5 inch overall length for compact jig plate integration
• Hardened steel construction at 60 to 65 HRC for extended service life under abrasive drilling conditions
• Press fit installation method ensures a secure, permanent seat without fasteners
• Meets ANSI standards for drill bushing dimensional conformance

Compatibility

Designed as a standard ANSI-conforming press fit headless drill bushing for use in toolmaker-built jig plates and fixture bodies where a permanent, non-renewable bushing installation is required.

Installation Notes

Press fit bushings are typically installed by toolmakers or machinists using an arbor press or hydraulic press — never drive with a hammer directly on the bushing face. The receiving bore in the jig plate must be machined to the correct interference fit tolerance before installation. Once pressed in, this bushing is not intended for removal or replacement. Verify bore alignment and cleanliness before pressing to avoid galling or misalignment.