Boneham AM00000571 Drill Bushing Pm 4.75 in Id

Product Description

The BONEHAM AM00000571 is a press fit headless drill bushing manufactured from steel and designated under industry code PM. This bushing is designed to guide drill bits and other cutting tools with precision during machining and fabrication operations. It presses directly into a jig or fixture plate without a flange or head, producing a flush, low-profile installation. With a 4.75-inch inside diameter and a smooth steel bore, it provides consistent tool alignment and resists wear under repeated use. Machinists, tool-and-die technicians, and fabricators install this bushing as part of drill jig assemblies to maintain hole location accuracy across production runs.

This bushing is suited for use in drill jig fixtures across general metalworking, manufacturing, and fabrication environments. The PM industry code identifies it as a standard press fit headless type, which is a commonly specified configuration in industrial tooling applications. It is appropriate for use in both prototype and production jig setups where a permanent, non-renewable bushing is acceptable. Because it is not renewable, it is typically pressed in once and replaced as a unit when worn. The steel construction makes it compatible with standard jig plate materials used in machine shop and production floor settings.

Key Features

• Press fit installation seats the bushing flush with the jig plate surface
• Headless design provides a low-profile, snag-free fit in close-clearance fixtures
• Steel construction delivers wear resistance for repeated drill-through cycles
• PM industry code designation ensures dimensional conformance to standard jig bushing specifications
• Non-renewable design is suited for permanent fixture installations
• Lightweight at 0.25 pounds for easy handling during fixture assembly

Compatibility

Designed as an OEM-style replacement or new-installation press fit headless drill bushing for standard steel jig and fixture plates requiring a PM-coded bushing with a 4.75-inch inside diameter.

Installation Notes

Installation is typically performed by a machinist or tooling technician using an arbor press or hydraulic press to seat the bushing flush into a prepared jig plate bore. The receiving hole in the jig plate must be machined to the appropriate interference-fit tolerance for a PM-style press fit bushing before installation. Ensure the fixture is secured and the bushing is properly aligned before pressing to avoid cocking or damage to the bore. Once pressed in, this bushing is not intended for removal and reinstallation.