Boneham AM00000298 Drill Bushing Hm 8.4 in Id

Product Description

The BONEHAM AM00000298 is a press fit headless drill bushing designed to guide cutting tools with precision during drilling operations. Manufactured from hardened steel with a hardness rating of 60 to 65 HRC, this HM-industry-code bushing delivers consistent bore alignment and long service life in production jig and fixture applications. The inside diameter measures 8.4 inches, providing accurate tool guidance while the body outside diameter of 15.00 mm and overall length of 25.00 mm suit compact fixture designs. Licensed machinists and tooling specialists install this bushing type in drill jigs where repeatable hole location is critical.

This bushing is suited for use in metal fabrication, machining, and tooling environments where press fit installation into a jig plate or fixture body is required. The headless HM design sits flush with the surrounding surface, making it appropriate for applications where a protruding flange would interfere with workpieces or clamping setups. It is typically found in production line fixtures, inspection jigs, and custom tooling assemblies across both light and heavy manufacturing settings.

Key Features

• Press fit installation method — no additional fasteners required once seated
• Hardened steel construction rated at 60 to 65 HRC for wear resistance
• HM industry code designation per ANSI standards
• Inside diameter tolerance of +0.005 to +0.014 mm for precise tool guidance
• Headless design mounts flush with jig plate surface
• Non-renewable bushing — intended as a permanent press fit installation

Compatibility

Designed as an OEM-style replacement or new-installation press fit headless drill bushing for use in ANSI-compliant drill jig fixtures requiring an HM-code bushing with an 8.4-inch inside diameter.

Installation Notes

Installation is performed by qualified toolmakers or machinists using a press or arbor press to seat the bushing flush into the jig plate bore. Ensure the receiving bore is machined to the correct interference fit tolerance before pressing to avoid distortion of the bushing ID. Do not hammer the bushing directly without a proper driver to prevent damage to the hardened body. Once pressed in, the bushing is not intended to be removed and reused.