Boneham H6412LK Press Fit Headed Drill Bushing 1/2 in

Product Description

The BONEHAM H6412LK is a Type H press fit headed drill bushing manufactured from hardened steel for use in jig and fixture drilling operations. The bushing features a 0.5000 inch inside diameter with a tight tolerance range of +0.0001 to +0.0005 inch, ensuring accurate drill guidance and repeatable hole location. The body outside diameter measures 1 inch with a 3/4 inch length under the head. Hardness is rated at 60 to 65 HRC, making it suitable for high-cycle drilling applications where wear resistance is critical. Machinists, toolmakers, and production drill jig operators are the primary installers of this component.

This bushing is designed for permanent installation in drill jigs, fixtures, and tooling plates where a headed, non-renewable bushing is appropriate. The headed design seats against the jig plate surface, providing a positive stop and preventing the bushing from being pushed through under drilling pressure. It is well suited for ferrous and non-ferrous workpiece drilling in production and job-shop environments. The press fit installation method requires no additional locking hardware and holds the bushing firmly in a machined liner hole.

Key Features

• Type H headed press fit design — seats flush against jig plate for positive axial location
• Inside diameter tolerance of +0.0001 to +0.0005 inch for precise drill guidance
• 60 to 65 HRC hardness for extended wear life in high-cycle drilling
• Steel construction — non-renewable, permanent installation bushing
• Head outside diameter of 1-15/64 inches and head height of 5/16 inch
• Meets ANSI standards for drill bushing dimensions and tolerances

Compatibility

Designed as an OEM-style replacement or direct-fit component for drill jigs and tooling fixtures requiring a Type H press fit headed drill bushing with a 1/2 inch inside diameter and 1 inch body outside diameter per ANSI standards.

Installation Notes

Press fit bushings are typically installed by toolmakers or machinists using an arbor press or hydraulic press. The receiving liner hole must be machined to the correct press fit tolerance before installation. Do not use a hammer directly on the bushing head, as this can crack the hardened steel or distort the bore. Once pressed in, this bushing is not designed for removal and replacement.