Boneham PT125CU Press Fit Headless Drill Bushing

Product Description

The BONEHAM PT125CU is a headless, press fit drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations. Manufactured from steel with a hardness rating of 60 to 65 HRC, this bushing maintains accurate hole location under repeated use. It features a 3/32 inch inside diameter and a 3/16 inch body outside diameter, with an overall length of 5/16 inch. The headless profile allows flush installation in jig plates where a protruding head would interfere with workpiece clearance. Machinists, toolmakers, and fixture builders install this type of bushing in drill jig assemblies across production and maintenance environments.

This bushing is suited for applications requiring consistent hole placement in metal fabrication, fixture construction, and tooling operations. The press fit installation method secures the bushing permanently in the jig plate bore without locking mechanisms or additional hardware. It conforms to ANSI standards for drill bushing geometry, making it a direct-fit option in standard jig plate configurations. Typical users include machine shops, toolrooms, and manufacturing facilities where repeatable hole location is critical.

Key Features

• Headless design allows flush mounting in jig plates without head clearance issues
• Press fit installation method provides a permanent, secure seat in the plate bore
• Steel construction with 60 to 65 HRC hardness for wear resistance under repeated drilling cycles
• Inside diameter tolerance of +0.0001 to +0.0004 inches ensures accurate tool guidance
• Meets ANSI standards for drill bushing geometry and dimensional consistency
• Bushing Industry Code P for straightforward cross-reference and replacement sourcing

Compatibility

Designed as an OEM-style replacement or new-installation drill bushing for standard ANSI-compliant jig plates requiring a press fit, headless style bushing with a 3/32 inch inside diameter and 3/16 inch outside diameter.

Installation Notes

Press fit bushings are installed by toolmakers or machinists using an arbor press or hydraulic press — never drive them in with a hammer, as this can damage the bore or distort the bushing. The receiving bore in the jig plate must be finish-reamed to the correct interference fit tolerance before installation. Once pressed in, this bushing is not designed for removal and reinstallation. Always verify bore alignment and cleanliness before pressing to ensure proper seating and concentricity.