Boneham AM00000090 Press Fit Headless Drill Bushing Hm

Product Description

The BONEHAM AM00000090 is a press fit headless drill bushing in the HM industry code series, manufactured from steel. It is designed to be permanently pressed into a jig plate or fixture body without the use of a head flange, providing a flush surface for close-tolerance drilling operations. The bushing features an inside diameter of 20.5 inches, a body outside diameter of 30.00 mm, and an overall length of 36.00 mm. It is installed by machine shops, toolmakers, and fixture builders who require repeatable hole location accuracy in production drilling applications.

This bushing is suited for use in drill jigs and machining fixtures in both production and job-shop environments. The headless press fit design keeps the jig surface clear of obstructions, making it appropriate for applications where clearance above the fixture plate is limited. The HM industry code classification allows straightforward cross-referencing to standard tooling catalogs when specifying or replacing worn bushings in existing fixtures.

Key Features

• Press fit installation method — no set screws or locking rings required
• Headless design provides a flush, unobstructed jig surface
• HM industry code series for standard cross-reference compatibility
• Steel construction for durability in repeated drilling cycles
• Non-renewable design — intended as a permanent press fit component

Compatibility

Designed as an OEM-style replacement or new-build component for drill jigs and machining fixtures requiring HM-series headless press fit drill bushings with a 20.5-inch inside diameter.

Installation Notes

Press fit bushings are typically installed by a toolmaker or machinist using an arbor press or hydraulic press to achieve the required interference fit in the fixture plate bore. Power down all associated machinery and secure the fixture before installation or removal. Bore dimensions in the jig plate should be verified to specification before pressing to avoid bushing damage or improper fit. Never drive a press fit bushing in with an impact tool, as this can distort the bore and compromise hole location accuracy.