Boneham H6412MX Press Fit Headed Drill Bushing Type H

Product Description

The BONEHAM H6412MX is a Type H press fit headed drill bushing used to guide cutting tools with precision during drilling, reaming, and boring operations. It features a 23/32-inch inside diameter, a 1-inch body outside diameter, and a 3/4-inch length under the head. Constructed from steel and hardened to 60 to 65 HRC, this bushing delivers the wear resistance and dimensional stability required for accurate, repeatable hole locations in jig and fixture applications. The head outside diameter measures 1-15/64 inches with a head height of 5/16 inches. Machinists, tool and die makers, and fixture builders install this bushing in drilling jigs where a permanent, non-renewable guide is specified.

The H6412MX is suited for production and prototype drilling fixtures across metalworking and manufacturing environments. Its press fit installation method secures the bushing directly into the jig plate without a liner bushing, making it appropriate for high-volume applications where the bushing position does not require routine replacement. The inside diameter tolerance of plus 0.0001 to plus 0.0005 inches ensures consistent tool guidance and repeatable hole placement across production runs.

Key Features

• Type H headed design provides a positive stop against the jig plate surface during installation
• 23/32-inch inside diameter with a tolerance of plus 0.0001 to plus 0.0005 inches for precise tool guidance
• Hardened steel construction at 60 to 65 HRC for extended wear life in high-cycle drilling applications
• Press fit installation method — no liner bushing required
• Non-renewable design optimized for permanent fixture installations
• Meets ANSI standards for drill bushing dimensions and tolerances

Compatibility

Designed as an OEM-style replacement or direct installation component for drilling jigs and fixtures requiring a Type H press fit headed drill bushing per ANSI standards.

Installation Notes

Press fit bushings are typically installed by toolmakers or machinists using an arbor press to drive the bushing flush or to the head seat in the jig plate. Power down all machinery before bushing installation or removal. The bore receiving the bushing must be machined to the correct press fit tolerance to ensure proper retention and concentricity. Consult applicable ANSI jig bushing standards and shop engineering requirements before finalizing fixture design.