Boneham H408JR Press Fit Headed Drill Bushing Type H

Product Description

The BONEHAM H408JR is a press fit headed drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations. Manufactured from steel and hardened to 60 to 65 HRC, this Type H bushing provides a durable wear surface that maintains accurate hole location across repeated production cycles. The inside diameter measures 0.377 inches with a tolerance of +0.0001 to +0.0005 inches, making it suitable for close-tolerance tooling setups. It installs permanently into a jig plate by press fit and is not designed for removal and replacement. Machinists and toolroom professionals install this bushing as a fixed component in drill jigs and fixture plates.

The H408JR fits standard drill jig and fixture applications where a permanent, headed bushing is required. The headed design allows the bushing to seat flush against the jig plate surface, providing a positive stop during installation. With a body outside diameter of 0.625 inches (5/8 inches), a head outside diameter of 0.797 inches (51/64 inches), a head height of 0.219 inches (7/32 inches), and a length under head of 0.500 inches (1/2 inches), this bushing suits a wide range of standard jig plate thicknesses. It conforms to ANSI standards for drill bushing dimensions and is sold individually.

Key Features

• Press fit installation method for permanent, non-renewable fixturing
• Inside diameter of 0.377 inches (Letter size V) with +0.0001 to +0.0005 inch tolerance for close-tolerance tool guidance
• Steel construction hardened to 60 to 65 HRC for long service life in production jigs
• Headed design provides a positive seating surface against the jig plate face
• Conforms to ANSI drill bushing standards (Type H, Industry Code H)
• Not counterbored — straight body profile for standard jig plate installations

Compatibility

Designed as an ANSI-standard press fit headed drill bushing suitable for use in drill jigs and fixture plates requiring a permanent Type H bushing with a 0.377 inch inside diameter and 5/8 inch body outside diameter.

Installation Notes

This bushing is installed by a machinist or toolmaker using an arbor press or hydraulic press to seat it into a properly sized hole in the jig plate. The receiving hole in the jig plate must be machined to the appropriate interference fit tolerance to ensure the bushing remains fixed during service. Because this is a non-renewable bushing, removal will typically damage either the bushing or the jig plate. Always verify hole location and plate thickness before pressing in place.