Boneham P3212IM Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM P3212IM is a headless press fit drill bushing designed to guide drill bits with precision in fixed jig and fixture applications. Manufactured from hardened steel with a surface hardness of 60 to 65 HRC, this bushing provides consistent bore alignment and resists wear over repeated drilling cycles. The headless profile sits flush with the jig plate surface, making it well suited for applications where a protruding head would interfere with workpiece clearance. With an inside diameter of 0.3125 inches and an overall length of 0.75 inches, it delivers reliable guidance in compact fixture setups. Machinists and toolmakers install this type of bushing when building or refurbishing drill jigs that demand repeatable hole location accuracy.

This bushing is appropriate for use in drill jig plates across light manufacturing, metalworking, and precision machining environments. It is pressed directly into a reamed hole in the jig body and is intended as a permanent, non-renewable installation. The P industry code designates standard press fit headless geometry per ANSI specifications. Typical applications include production drilling fixtures in job shops, toolrooms, and assembly operations where high-volume, consistent hole placement is required. Installation is typically performed by machinists or toolmakers using a press rather than field service trades.

Key Features

• Headless design sits flush with jig plate for unobstructed workpiece clearance
• Hardened steel construction rated 60 to 65 HRC for extended wear life
• Inside diameter tolerance of +0.0001 to +0.0005 inches for precise drill guidance
• Press fit installation method provides a secure, permanent fit in the jig body
• Meets ANSI standards for drill bushing geometry and dimensional consistency
• Compact 0.75 inch overall length suits thin jig plate configurations

Compatibility

Designed as an ANSI-standard press fit headless drill bushing for use in machined jig plates requiring a 0.5 inch body outside diameter bore and a 0.3125 inch inside guide diameter.

Installation Notes

Press fit bushings are installed by machinists using an arbor press or hydraulic press into a precisely reamed jig plate bore. The receiving hole in the jig body must be reamed to the correct interference fit tolerance before installation. Once pressed in, this bushing is not designed for removal or replacement. Always verify bore alignment and bushing seating before committing the jig plate to production use.