Boneham PT128DA Press Fit Headless Drill Bushing

Product Description

The BONEHAM PT128DA is a press fit headless drill bushing manufactured from hardened steel and designed to guide cutting tools with precision in jig and fixture applications. With an inside diameter of 0.0995 inches, a body outside diameter of 3/16 inches, and an overall length of 1/2 inch, this bushing meets ANSI standards and holds an inside diameter tolerance of +0.0001 to +0.0004 inches. It carries a hardness rating of 60 to 65 HRC, providing the wear resistance required for high-cycle drilling operations. Machinists, toolmakers, and fixture builders install this component in production jigs where repeatable hole location accuracy is essential.

The PT128DA is suited for use in drill jigs, assembly fixtures, and tooling plates in both job-shop and production-floor environments. Its headless profile makes it appropriate for flush-mount installations where a headed bushing would interfere with workpiece seating or clamping. The press fit installation method provides a permanent, non-renewable mount, making this bushing ideal for dedicated, high-volume tooling setups where the bushing position will not need to change. This is a single-piece, non-counterbored bushing conforming to ANSI industry standards for type P drill bushings.

Key Features

• Inside diameter of 0.0995 inches with a tight tolerance of +0.0001 to +0.0004 inches for precise tool guidance
• Body outside diameter of 3/16 inches and overall length of 1/2 inch for compact, flush-mount installation
• Hardened steel construction rated at 60 to 65 HRC for long service life under repeated tool contact
• Headless, press fit design for permanent, flush seating in jig plates and fixture bodies
• Non-renewable configuration suits dedicated, fixed-location tooling applications
• Conforms to ANSI standards for type P drill bushings

Compatibility

Designed as an ANSI-standard type P press fit headless drill bushing for use in machining jigs and tooling fixtures requiring a permanent, flush-mounted drill guide.

Installation Notes

Installation of press fit drill bushings is typically performed by toolmakers or machinist technicians using an arbor press or hydraulic press to drive the bushing flush into a precision-bored hole in the jig plate. The receiving bore must be machined to the correct interference fit tolerance before installation. Once pressed in, this non-renewable bushing is not intended for removal and reinstallation. Verify bore alignment before pressing to avoid damaging the bushing or the fixture body.