Boneham P485KG Press Fit Headless Drill Bushing

Product Description

The BONEHAM P485KG is a headless press fit drill bushing used to guide cutting tools accurately through jigs and fixtures in precision machining operations. Built to Industry Code P, this bushing features a 13/32-inch inside diameter and a 3/4-inch outside diameter, with an overall length of 5/16 inches. Constructed from steel, it is pressed directly into the jig plate without a flange or head, keeping the top face flush for close-tolerance work. Machinists and toolmakers rely on this style of bushing to maintain consistent hole location and extend jig service life across repeated drilling cycles.

This bushing is suited for use in drill jig applications where a flush, non-renewable installation is acceptable. The headless design makes it appropriate for situations where clearance above the work surface is limited or where a clean, unobstructed face is required. It is a non-renewable bushing, meaning it is pressed permanently into the jig body and is not intended for field replacement during production runs. Typical users include tool-and-die shops, machine shops, and precision fabrication facilities working with steel or similarly hard jig bodies.

Key Features

• Industry Code P headless press fit design for flush installation in jig plates
• 13/32-inch inside diameter with a tight tolerance of +0.0001 to +0.0005 inches for accurate tool guidance
• 3/4-inch body outside diameter for positive press fit retention
• 5/16-inch overall bushing length suits thin jig plates and space-constrained fixtures
• Steel construction provides durability and wear resistance under repeated drilling operations
• Non-renewable, non-counterbored design for permanent, production-use installations

Compatibility

Designed as a permanent press fit replacement or new-install drill bushing for steel jig plates requiring an Industry Code P headless bushing with a 13/32-inch bore and 3/4-inch outside diameter.

Installation Notes

Installation is performed by machinists or toolmakers using an arbor press or hydraulic press to seat the bushing flush into a precision-reamed hole in the jig body. The receiving bore in the jig plate must be reamed to the appropriate interference fit to achieve proper retention. Power down any associated machinery and secure the workpiece before pressing the bushing into place. Because this is a non-renewable bushing, removal typically damages the jig bore and the bushing itself, so verify location before pressing.