Boneham AM00000031 Drill Bushing Hm 12 in Id Steel

Product Description

The BONEHAM AM00000031 is a press fit headless drill bushing designed to guide drill bits with precision in jig and fixture applications. Manufactured from hardened steel with a hardness rating of 60 to 65 HRC, this bushing resists wear under repeated drilling cycles. It features an inside diameter of 12 inches, a body outside diameter of 18 millimeters, and an overall length of 20 millimeters. The headless design sits flush with the jig plate surface, making it well suited for close-tolerance work where a flanged bushing would interfere. Machinists and toolmakers press this bushing directly into a prepared hole in a drill jig or fixture body.

This bushing is intended for use in precision drill jig assemblies in both production and maintenance machine shop environments. It is a non-renewable style, meaning it is permanently installed by press fit rather than locked in place with a liner bushing. Typical applications include guiding twist drills, reamers, and similar cutting tools through repeated operations where locational accuracy and hole-to-hole consistency are required. It conforms to ANSI standards for drill bushing geometry and is packaged individually.

Key Features

• Press fit installation — no liner bushing required
• Hardened steel construction, 60 to 65 HRC for extended wear life
• Headless design sits flush with jig plate surface
• Inside diameter tolerance of plus 0.006 to plus 0.017 mm for consistent tool guidance
• Conforms to ANSI drill bushing standards
• Non-renewable style for permanent fixture installation

Compatibility

Designed as an OEM-style press fit headless drill bushing conforming to ANSI HM series standards, suitable for use in drill jigs and fixtures requiring a permanently installed guide bushing.

Installation Notes

Installation is performed by a machinist or toolmaker using an arbor press or hydraulic press. The receiving hole in the jig plate must be machined to the appropriate press fit tolerance before installation. Once pressed in, this bushing is not intended for removal or reuse. Follow standard shop safety practices and de-energize any associated equipment before working in or around the fixture.