Boneham PT2812HJ Press Fit Headless Drill Bushing

Product Description

The BONEHAM PT2812HJ is a press fit headless drill bushing designed to guide cutting tools with precision in jig and fixture applications. Built to Industry Code P, this bushing features a 0.257 inch inside diameter (Letter F), a 7/16 inch body outside diameter, and a 3/4 inch overall length. Manufactured from hardened steel with a Rockwell hardness of 60 to 65 HRC, it provides consistent bore guidance and long service life under repeated drilling cycles. The headless design allows flush seating in close-clearance fixture plates. Inside diameter tolerance is held to +0.0001 to +0.0005 inches, meeting ANSI standards for drill bushing accuracy.

This bushing is suited for use in production drilling fixtures, jigs, and tooling plates where a permanent, non-renewable press fit installation is required. Typical applications include metal fabrication shops, machine shops, and tooling departments where repeatable hole location accuracy is critical. The press fit installation method locks the bushing directly into a prepared receiver hole without the need for a locking collar or retaining screw, making it a clean solution for high-cycle tooling setups.

Key Features

• Industry Code P headless press fit design for permanent fixture installation
• 0.257 inch ID (Letter F) with tight tolerance of +0.0001 to +0.0005 inches for precise drill guidance
• 7/16 inch body outside diameter and 3/4 inch overall length
• Hardened steel construction, 60 to 65 HRC for wear resistance
• Complies with ANSI drill bushing standards
• Non-renewable design for fixed, long-term tooling applications

Compatibility

Designed as an OEM-style replacement or direct tooling component for drill jigs and fixtures requiring an ANSI-standard Industry Code P press fit headless bushing with a 0.257 inch bore.

Installation Notes

Press fit bushings are installed by machinists or tooling technicians using an arbor press or hydraulic press fitted with an appropriate driver. The receiver hole in the fixture plate must be machined to the correct interference fit diameter per ANSI specifications before installation. Never hammer the bushing in directly without a driver to avoid distorting the bore. Confirm ID integrity with a plug gauge after pressing to verify dimensional accuracy was maintained.