Boneham AM00000538 Drill Bushing Pm 3.7in Id Steel

Product Description

The BONEHAM AM00000538 is a press fit headless drill bushing rated to industry code PM, designed to guide drill bits with precision in jig and fixture applications. The bushing features a 3.7-inch inside diameter and is manufactured from hardened steel with a Rockwell hardness of 60 to 65 HRC, providing long service life under repeated drilling cycles. It installs without a head flange, seating flush into a bored hole via press fit. This bushing is a non-renewable design, meaning it is pressed permanently into the jig body. Machinists, toolmakers, and fixture builders are the typical end users for this component.

The AM00000538 is suited for production drilling, reaming, and boring operations where a fixed, headless bushing is required. The headless profile allows the bushing to sit below or flush with the work surface, making it appropriate for applications where clearance above the jig plate is limited. It conforms to ANSI standards for drill bushings, which means it fits standard jig plate bores dimensioned to the PM bushing series.

Key Features

• Press fit installation - seats permanently in the jig body without fasteners or retaining rings
• Hardened steel construction, 60 to 65 HRC for wear resistance under repeated use
• Headless design allows flush or sub-flush mounting in jig plates
• Inside diameter tolerance of plus 0.004 to plus 0.012 mm for consistent tool guidance
• ANSI-compliant PM series bushing for standardized fitment
• Non-renewable design - intended for permanent installation

Compatibility

Designed as an OEM-style replacement or new-installation component for ANSI PM series jig and fixture drill bushing applications requiring a press fit, headless configuration with a 3.7-inch inside diameter.

Installation Notes

Press fit bushings are installed by toolmakers or machinists using an arbor press or hydraulic press - never drive with a hammer directly on the bushing face, as this can damage the bore or alter the inside diameter tolerance. Verify the mating jig plate bore diameter against the bushing outside diameter before pressing to ensure proper interference fit. Once installed, a PM bushing is not intended for removal and reuse. Always follow shop safety procedures and wear appropriate eye protection during press fitting operations.