Boneham P404JB Press Fit Headless Drill Bushing

Product Description

The BONEHAM P404JB is a press fit headless drill bushing designed to guide cutting tools with precision in jig and fixture applications. Built to Industry Code P standards, this bushing features an inside diameter of 11/32 inches and a body outside diameter of 5/8 inches, with an overall length of 1/4 inch. Constructed from steel, it installs without a retaining head, seating flush within the jig plate for low-profile tooling setups. The inside diameter is held to a tight tolerance of +0.0001 to +0.0005 inches, ensuring consistent tool guidance and repeatable hole location across production runs. Machinists, tool and die makers, and fixture builders rely on this type of bushing in drilling, reaming, and boring operations.

This bushing is suited for use in drill jigs and production fixtures where precise hole placement is required. The headless press fit design is commonly used in applications where the bushing must sit flush with or below the jig plate surface, eliminating interference with workpieces or clamping hardware. It is a permanent-installation style bushing, meaning it is not intended for removal and replacement during normal operation. Typical applications include metal fabrication shops, machine shops, and tooling departments running moderate to high-volume drilling operations on ferrous and non-ferrous materials.

Key Features

• Inside diameter of 11/32 inches held to +0.0001 to +0.0005 inch tolerance for accurate tool guidance
• Body outside diameter of 5/8 inches for a firm press fit installation
• Overall length of 1/4 inch suits low-profile and flush-mount jig plate configurations
• Headless design eliminates head interference with workpieces and fixtures
• Steel construction provides durability under repeated tool contact
• Non-renewable press fit installation for permanent fixture use

Compatibility

Designed as an OEM-style replacement or direct-fit component for drill jigs and fixtures requiring an Industry Code P headless press fit bushing with 11/32 inch inside diameter and 5/8 inch outside diameter.

Installation Notes

Press fit bushings are typically installed by a machinist or toolmaker using an arbor press or hydraulic press. The receiving bore in the jig plate must be machined to the appropriate tolerance to achieve the correct interference fit. Do not drive the bushing in with a hammer, as this can distort the inside diameter and compromise tool guidance accuracy. Once pressed in, this bushing is not designed for removal without potentially damaging the jig plate or bushing.