Boneham P485LP Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM P485LP is a press fit headless drill bushing designed to guide cutting tools with precision in jig and fixture applications. Manufactured from steel and hardened to 60 to 65 HRC, this bushing provides a wear-resistant bore that holds tight tolerances over repeated use. The inside diameter measures 33/64 inches with a tolerance of +0.0001 to +0.0005 inches, and the body outside diameter is 3/4 inches. With an overall length of 5/16 inches, this headless style installs flush without a retaining flange. It is intended for permanent press fit installation into a drill jig plate and is not renewable once pressed in place.

This bushing suits toolroom, fixture-building, and production drilling operations where consistent hole location is required. The headless P-series design is specified when a low-profile installation is needed and the bushing is not intended to be removed or replaced after installation. Machinists, toolmakers, and fixture designers working to ANSI standards will find this part appropriate for steel or cast jig plates where dimensional accuracy is critical across production runs.

Key Features

• Press fit installation for permanent, non-renewable seating in jig plates
• Headless design provides a flush, low-profile installation with no retaining flange
• Inside diameter tolerance of +0.0001 to +0.0005 inches ensures consistent tool guidance
• Hardness of 60 to 65 HRC delivers extended wear resistance under repeated drilling cycles
• Meets ANSI standards for drill bushing geometry and dimensional conformance
• Steel construction suited for use in steel and cast jig plate assemblies

Compatibility

Designed as a P-series press fit headless drill bushing per ANSI standards, compatible with jig plates and fixture assemblies requiring a 3/4-inch outside diameter press fit bore and 33/64-inch inside diameter tool guidance.

Installation Notes

Installation is performed by toolmakers or machinists using an arbor press or hydraulic press to seat the bushing flush into the prepared bore of a drill jig plate. The mating bore in the jig plate must be machined to the appropriate interference fit tolerance before installation. Once pressed in, this bushing is not designed to be removed or reused. Power down any associated equipment and secure the fixture before pressing the bushing into place.