Boneham P406IM Press Fit Headless Drill Bushing

Product Description

The BONEHAM P406IM is a press fit headless drill bushing conforming to ANSI standards and Bushing Industry Code P. It is manufactured from steel and hardened to 60 to 65 HRC, providing a wear-resistant guide bore for precision drilling operations. The inside diameter measures 0.3125 inches with a tight tolerance of +0.0001 to +0.0005 inches, ensuring accurate bit guidance. The body outside diameter is 5/8 inches and the overall length is 3/8 inches. This bushing is a fixed, non-renewable type intended for permanent installation in drill jigs and fixtures used in machining, fabrication, and tooling applications.

This bushing is suited for use in drill jigs where a permanent, flush-mounted guide is required. The headless design seats flush with the jig plate surface, making it appropriate for close-clearance applications where a flanged head would interfere with workpiece access or fixture stack-up. Machinists, tool and die makers, and precision fabricators typically install this type of bushing in production jig plates to maintain consistent hole location across repeated drilling cycles.

Key Features

• Press fit installation - permanent, non-renewable fixed bushing design
• Hardness of 60 to 65 HRC for extended wear life under continuous drilling use
• Inside diameter tolerance of +0.0001 to +0.0005 inches for precise bit guidance
• Headless body seats flush with jig plate - no flange to interfere with workpiece clearance
• Steel construction meets ANSI drill bushing standards
• Bushing Industry Code P classification for straightforward replacement identification

Compatibility

Designed as an ANSI-standard press fit headless drill bushing for use in drill jigs and fixture plates requiring a 5/8 inches body outside diameter with a 5/16 inches inside diameter guide bore.

Installation Notes

Press fit bushings are installed by machinists or toolmakers using an arbor press or similar pressing equipment - never drive them in with a hammer, as this can crack or misalign the bushing. The receiving hole in the jig plate must be machined to the correct tolerance to achieve proper interference fit; consult ANSI jig bushing standards for hole preparation requirements. Once pressed in, the P406IM is a permanent installation and is not designed for removal or replacement in service.