Boneham H4828IO Press Fit Headed Drill Bushing

Product Description

The BONEHAM H4828IO is a Type H press fit headed drill bushing designed to guide drill bits with precision in jig and fixture applications. Built from steel, this bushing features a 0.316-inch inside diameter and a 3/4-inch body outside diameter. The press fit installation method creates a secure, permanent seat in the jig plate without the need for locking mechanisms. Machinists and toolmakers install this bushing to maintain consistent hole location and tolerances across repeated drilling operations.

This bushing is suited for production drilling environments where a permanent, non-renewable guide is acceptable. The headed design provides a positive stop against the jig plate surface, controlling insertion depth and preventing the bushing from being pushed through during operation. With a 1-3/4-inch length under the head, it accommodates moderate plate thickness and provides adequate drill guidance along the tool path.

Key Features

• Type H press fit design for permanent installation in drill jigs and fixtures
• 0.316-inch inside diameter with a tolerance of +0.0001 to +0.0005 inches for precise drill guidance
• 3/4-inch body outside diameter and 59/64-inch head outside diameter for secure seating
• 1-3/4-inch length under head accommodates standard jig plate thicknesses
• 7/32-inch head height provides a low-profile positive stop at the plate surface
• Steel construction for durability in repeated-use drilling applications

Compatibility

Designed as an OEM-style replacement or direct-fit bushing for drill jigs and fixtures requiring a Type H press fit headed bushing with a 0.316-inch inside diameter.

Installation Notes

Press fit bushings are installed by a toolmaker or machinist using an arbor press or similar controlled-force equipment. The receiving hole in the jig plate must be machined to the correct interference fit tolerance before installation. Once pressed in, this bushing is not designed for removal or replacement. Inspect the jig plate bore for burrs or contamination before pressing to avoid misalignment.