Boneham P484KA Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM P484KA is a press fit headless drill bushing designed to guide cutting tools accurately during drilling, reaming, and boring operations. Manufactured from steel, this bushing features an inside diameter of 0.397 inches (Letter size X, Industry Code P) and a body outside diameter of 0.75 inches. The overall bushing length is 0.25 inches. The press fit design allows for permanent installation in a drill jig plate without a locking head, keeping the jig surface clean and flush. Machinists, tool and die makers, and production shops rely on this style of bushing for high-volume fixture work where consistent hole location is critical.

This bushing is suited for use in drill jigs and machining fixtures in both production and job-shop environments. The headless profile makes it appropriate for applications where a flush or recessed installation is required and no bushing renewal is needed. It installs directly into a prepared reamed hole in the jig body. The tight inside diameter tolerance of +0.0001 to +0.0005 inches ensures repeatable tool guidance across high cycle counts.

Key Features

• Press fit installation method for permanent, flush-mount seating in jig plates
• Headless design provides a clean, unobstructed jig surface
• Inside diameter tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• Steel construction for durability in production drilling applications
• Industry Code P designation for straightforward catalog cross-referencing
• Compact 0.25-inch overall length suits thin jig plates and close-clearance fixtures

Compatibility

Designed as an OEM-style replacement or new-build component for standard drill jig fixtures requiring a P-series press fit headless drill bushing with a 0.397-inch inside diameter and 0.75-inch outside diameter.

Installation Notes

Installation is performed by a machinist or tool maker using an arbor press or hydraulic press to seat the bushing into a precisely reamed hole in the jig plate. The receiving hole should be machined to the appropriate interference fit tolerance before pressing to prevent bushing damage or loosening in service. Do not use a hammer directly on the bushing face. Once pressed in, this bushing is not designed for removal or renewal.