Boneham H104BR Press Fit Headed Drill Bushing Type H

Product Description

The BONEHAM H104BR 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, this bushing resists wear through repeated drilling cycles. It installs without a lock ring or retainer — the press fit holds the bushing permanently in the jig plate. The headed design provides a positive shoulder stop against the plate surface, ensuring consistent seating depth. Inside diameter is 0.0625 inches with a tolerance of +0.0001 to +0.0004 inches, maintaining tight guidance for small-diameter drill bits used in precision metalworking and machining operations.

This bushing is suited for use in drill jigs, fixtures, and tooling plates where a permanent, non-renewable bushing is required. The 5/32 inch body outside diameter and 1/4 inch head outside diameter make it appropriate for close-tolerance jig plate bores in light to medium production environments. Machinists, tool-and-die makers, and fixture builders typically specify this part when a fixed guide bushing is needed for small-diameter hole drilling. It is supplied as an individual unit and is not intended for applications requiring bushing renewal or liner-style installation.

Key Features

• Press fit installation — no retaining ring or lock required
• Headed (Type H) design provides positive shoulder stop against jig plate surface
• Steel construction hardened to 60 to 65 HRC for extended wear life
• Inside diameter tolerance of +0.0001 to +0.0004 inches for precise drill guidance
• Non-renewable fixed bushing per ANSI standards
• Head outside diameter of 1/4 inch, head height of 3/32 inch

Compatibility

Designed as a permanent press fit replacement or new-installation headed drill bushing for drill jigs and fixtures requiring a Type H bushing with a 0.0625 inch inside diameter and 5/32 inch body outside diameter, conforming to ANSI bushing standards.

Installation Notes

Press fit bushings are installed by a qualified machinist or toolmaker using an arbor press or hydraulic press — do not drive with a hammer, as this can damage the bore tolerance or distort the bushing. The receiving hole in the jig plate must be precision-bored to the correct interference fit per ANSI specifications before installation. Once pressed in, this bushing is not intended to be removed or replaced. Confirm jig plate and bushing bore dimensions before pressing to avoid scrapping the plate.