Boneham P325IM Press Fit Headless Drill Bushing

Product Description

The BONEHAM P325IM is a press fit headless drill bushing designed to guide drill bits with precision in jig and fixture applications. Built to Industry Code P, it features a 5/16-inch inside diameter and a 1/2-inch body outside diameter, with an overall bushing length of 5/16 inches. Manufactured from steel and hardened to 60 to 65 HRC, it delivers the wear resistance required for repeated drilling cycles. The inside diameter is held to a tight tolerance of +0.0001 to +0.0005 inches, ensuring accurate hole location and consistent drill guidance across production runs. Machinists, tool and die makers, and fixture builders are the primary installers.

This bushing is suited for use in drill jigs, fixtures, and production tooling where a permanent, non-renewable press fit installation is required. The headless profile sits flush with the jig plate surface, making it appropriate for applications where a protruding head would interfere with workpiece movement or clamp placement. It is appropriate for both light-production and high-volume drilling operations on metal, plastic, or composite workpieces.

Key Features

• Press fit installation method for permanent, stable seating in the jig plate
• Headless design provides a flush surface for unobstructed workpiece handling
• Steel construction hardened to 60 to 65 HRC for extended service life
• Inside diameter tolerance of +0.0001 to +0.0005 inches for precise drill guidance
• Meets ANSI standards for drill bushing dimensional compliance
• Non-renewable design — intended as a fixed, long-term installation

Compatibility

Designed as an OEM-style replacement or new-install drill bushing for standard drill jigs and fixtures requiring a press fit headless style bushing conforming to ANSI Industry Code P dimensions.

Installation Notes

Installation is typically performed by machinists or toolmakers using an arbor press or hydraulic press to seat the bushing flush with the jig plate bore. The receiving bore should be prepared to the appropriate interference fit tolerance before pressing. Do not drive the bushing with a hammer directly on the bore face, as this can damage the inside diameter or distort the bushing. Because this is a non-renewable bushing, removal after pressing will require the bushing to be drilled or pressed out, which typically damages the jig plate bore.