Boneham AM00000089 Hm Drill Bushing 20.5 in Id Steel

Product Description

The BONEHAM AM00000089 is a press fit headless drill bushing manufactured to the HM industry code designation. It is used to guide drill bits and boring tools with precision in jig and fixture applications. Made from steel, this bushing is pressed directly into a drill jig plate without a locking flange or head, creating a flush, low-profile installation. The inside diameter measures 20.5 inches, and the body outside diameter is approximately 1.181 inches (30.00 mm). Overall bushing length is approximately 0.787 inches (20.00 mm). It is installed and serviced by machinists, tool and die makers, and precision fabricators working with drill jigs in production or repair environments.

This headless press fit bushing is suited for applications where a permanent, non-renewable guide bushing is required in a jig plate. The flush design keeps the bushing face level with the plate surface, which is useful when clearance above the work surface is limited. Typical scenarios include repetitive hole drilling operations in metal fabrication, tooling shops, and machine shops where consistent hole location is critical. The HM industry code identifies the specific dimensional series, allowing straightforward cross-referencing with standard jig bushing catalogs and replacement specifications.

Key Features

• HM industry code designation for standardized dimensional cross-referencing
• Press fit installation method for permanent, non-renewable mounting in jig plates
• Headless design provides a flush, low-profile fit with no protruding flange
• Steel construction for durability in repetitive drilling operations
• Inside diameter of 20.5 inches for precise drill and tool guidance
• Compact overall length of approximately 0.787 inches (20.00 mm)

Compatibility

Designed as an OEM-style replacement or new-installation headless press fit drill bushing conforming to HM industry code dimensional standards for use in standard drill jig plates.

Installation Notes

Press fit bushings are installed by machinists using an arbor press or hydraulic press to seat the bushing flush into a precisely bored jig plate hole. Verify the jig plate bore diameter matches the bushing body outside diameter before pressing to ensure proper interference fit. Do not hammer the bushing directly without a proper driver to avoid damaging the bore or bushing face. Once pressed in, this bushing is considered permanent and is not designed for field removal and replacement.