Boneham AM00000331 Drill Bushing Hm 9.3 Inch Id

Product Description

The BONEHAM AM00000331 is a press fit headless drill bushing manufactured to HM industry standards. It is designed to guide drill bits with precision during machining and fabrication operations, maintaining accurate hole location and reducing tool wander. Constructed from steel, this bushing is pressed directly into a drill jig or fixture plate without a retaining head, keeping the top surface flush for close-tolerance work. The 9.3-inch inside diameter accommodates the corresponding drill or tool shank. This bushing is not renewable and is intended as a permanent installation in production jigs. Machinists and tool-and-die technicians are the primary installers.

This bushing is suited for use in drill jigs, fixture plates, and production tooling setups where a flush, headless profile is required. The HM bushing code designates specific dimensional standards that govern the outside diameter and length relationship to the inside diameter, making this part a direct fit in applications calling for an HM-series bushing. It is appropriate for both one-off and repeat-production drilling operations in metalworking and light industrial environments.

Key Features

• Press fit installation — no retaining hardware required
• Headless profile provides a flush surface for close-clearance jig work
• HM industry code designation ensures dimensional interchangeability with HM-series jig plates
• Steel construction for durability in production drilling applications
• Non-renewable design for permanent fixture installation

Compatibility

Designed as an OEM-style replacement or direct fit for drill jig fixtures requiring an HM-series press fit headless bushing with a 9.3-inch inside diameter.

Installation Notes

Installation is typically performed by machinists or toolmakers using a drill press or arbor press to drive the bushing into a properly sized hole in the fixture plate. The receiving hole must be machined to the correct interference fit tolerance for the bushing outside diameter before pressing. Always ensure the jig plate is secured and free of chips or burrs before pressing the bushing into place. Once installed, this bushing is not intended for removal and replacement.