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The BONEHAM AM00000340 is a press fit headless drill bushing classified under industry code HM. It is used to guide drill bits and cutting tools with precision in metalworking and fabrication jigs and fixtures. The bushing features a 9.6-inch inside diameter and a steel construction, delivering the hardness and dimensional stability required for accurate, repeatable hole location in production and tooling environments. It is installed without a head flange, seating flush with the jig plate surface. Machinists, tool and die makers, and fixture builders are the primary trades that specify and install this component.
This bushing is suited for use in drill jigs, fixture plates, and precision tooling assemblies where consistent hole guidance is required. The headless profile allows it to seat fully recessed in the jig plate, making it appropriate for applications where a protruding flange would interfere with workpiece clamping or part seating. The HM industry code designates a standard press fit headless form recognized across tooling and machining supply specifications. It is a non-renewable bushing, meaning it is pressed in permanently and is not designed for field removal and replacement under normal service conditions.
Designed as an OEM-style replacement or new-installation press fit headless drill bushing for use in standard drill jigs and precision fixture plates conforming to HM industry code dimensional standards.
Press fit bushings are installed by toolmakers or machinists using an arbor press or hydraulic press sized to the bushing outside diameter. The receiving bore in the jig plate must be machined to the correct tolerance to achieve the proper interference fit before pressing in. Never drive the bushing in with impact tools, as this can distort the inside diameter and compromise tool guidance accuracy. Verify inside diameter condition and alignment after installation before placing the fixture into production service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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