Boneham H484IR Press Fit Headed Drill Bushing Steel

Product Description

The BONEHAM H484IR is a Type H press fit headed drill bushing manufactured from steel for use in precision drilling and machining operations. It features an inside diameter of 0.323 inches with a tolerance of +0.0001 to +0.0005 inches, a body outside diameter of 0.75 inches, and a length under the head of 0.25 inches. The headed design provides a positive stop against the jig plate surface, keeping the bushing accurately positioned during repeated drilling cycles. This bushing is permanently installed without a locking mechanism, making it appropriate for fixed, high-volume production drilling jigs where the drill path does not change. Machinists and toolmakers working in metal fabrication or precision machining shops are the primary installers.

The H484IR is suited for use in drill jig plates and fixture tooling in both production and job-shop machining environments. The Type H industry classification indicates a headed, press fit configuration that is driven or pressed into the jig plate and not intended for removal and replacement during the service life of the fixture. Applications typically include metalworking operations requiring consistent hole location across multiple workpieces. Its compact head height of 0.219 inches and head outside diameter of 0.922 inches allow it to seat flush or near-flush in standard jig plate counterbores.

Key Features

• Press fit installation method for permanent, fixed positioning in jig plates
• Inside diameter of 0.323 inches with a tight tolerance of +0.0001 to +0.0005 inches for accurate drill guidance
• Body outside diameter of 0.75 inches and head outside diameter of 0.922 inches
• Length under head of 0.25 inches suits standard jig plate thicknesses
• Head height of 0.219 inches provides a positive stop against the fixture surface
• Steel construction for durability in repeated drilling applications
• Non-renewable design intended for permanent fixture tooling

Compatibility

Designed as an OEM-style press fit headed drill bushing compatible with standard drill jig plates and fixture tooling accepting a 0.75-inch body outside diameter Type H bushing per industry tooling standards.

Installation Notes

Installation is performed by machinists or toolmakers using an arbor press or hydraulic press to drive the bushing into a prepared jig plate bore. The jig plate bore must be machined to the appropriate interference fit tolerance before installation. Once pressed in, this bushing is not designed for removal without risk of damage to the fixture. Always ensure the jig plate bore is clean and free of burrs before pressing the bushing into position.