Boneham H326GH Press Fit Headed Drill Bushing Steel

Product Description

The BONEHAM H326GH is a Type H press fit headed drill bushing designed to guide drill bits with precision in jig and fixture applications. Machined from steel and hardened to 60 to 65 HRC, it delivers consistent bore alignment and long service life in production drilling environments. The bushing features a 0.2055 inch inside diameter with a tight tolerance of +0.0001 to +0.0004 inches, a 1/2 inch body outside diameter, and a 3/8 inch length under the head. It is installed by pressing directly into a drill jig plate without a locking mechanism, making it a permanent, non-renewable component. Machinists, toolmakers, and fixture builders are the primary installers of this type of component.

This bushing is suited for use in drill jigs where a headed, press fit configuration is required to locate and guide cutting tools accurately. The headed design seats flush against the jig plate surface, providing a positive stop that controls bushing depth. It is commonly used in metal fabrication, production machining, and tool-and-die shops where repeatable hole location is critical. The inside diameter corresponds to wire gauge size 5, making it compatible with the appropriate drill bit or reamer for that designation.

Key Features

• Type H press fit design installs permanently into jig plate without a locking collar
• Inside diameter of 0.2055 inches with +0.0001 to +0.0004 inch tolerance for precise drill guidance
• Hardened steel construction at 60 to 65 HRC for wear resistance in repetitive drilling operations
• 3/8 inch length under head provides adequate guide depth for standard drill jig applications
• Headed configuration with 39/64 inch head outside diameter and 7/32 inch head height for positive seating
• Meets ANSI standards for drill bushing dimensional requirements

Compatibility

Designed as a press fit headed drill bushing for use in drill jigs and fixtures requiring a permanent, non-renewable bushing at inside diameter wire gauge size 5 (0.2055 inches).

Installation Notes

Installation is performed by toolmakers or machinists using an arbor press or hydraulic press to seat the bushing into a properly toleranced jig plate bore. Power down all machinery before servicing or replacing jig components. Do not drive the bushing with a hammer, as this may damage the bore or misalign the bushing. Once pressed in, this bushing is not designed for removal or replacement.