Boneham H648LU Press Fit Headed Drill Bushing Steel

Product Description

The BONEHAM H648LU is a Type H press fit headed drill bushing manufactured from steel, designed to guide drill bits with precision in jig and fixture applications. It features a 35/64-inch inside diameter and a 1-inch body outside diameter, with a length under head of 1/2 inch. The head outside diameter measures 1-15/64 inches and the head height is 5/16 inch. The inside diameter tolerance is held to a tight +0.0001 to +0.0005 inch range, making it suitable for close-tolerance drilling operations. This bushing is installed by press fit and is a non-renewable type. Machinists, tool and die makers, and manufacturing maintenance technicians work with this component.

This drill bushing is used in drill jigs, fixtures, and production tooling where repeatable hole location is required. It is appropriate for both light and production-volume machining operations in manufacturing, fabrication, and toolroom environments. The headed design seats against the jig plate surface, providing a positive stop to control the depth at which the bushing sits. Applications include guided drilling in steel, aluminum, and other structural materials across general metalworking and precision manufacturing setups.

Key Features

• Type H press fit installation — no locking mechanism required, secured permanently in the jig plate
• 35/64-inch inside diameter with a tight +0.0001 to +0.0005 inch tolerance for accurate drill guidance
• 1-inch body outside diameter and 1-15/64-inch head outside diameter for positive seating
• 5/16-inch head height provides a stable, flush-seating shoulder against the jig plate
• 1/2-inch length under head suits standard jig plate thicknesses
• Steel construction for durability in high-cycle drilling applications

Compatibility

Designed as an OEM-style replacement or new-installation drill bushing for Type H press fit headed bushing applications in standard drill jig plates and fixtures.

Installation Notes

Press fit drill bushings are installed by a toolmaker or machinist using an arbor press. The receiving hole in the jig plate must be machined to the appropriate interference fit tolerance before installation. Once pressed in, this bushing type is not intended for removal or replacement. Ensure the jig plate is properly supported to avoid distortion during pressing.