Boneham P4828JB Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM P4828JB is a press fit headless drill bushing designed to guide drill bits and reamers with precision in machining and fabrication applications. Built to ANSI standards, this bushing features an 11/32-inch inside diameter, a 3/4-inch body outside diameter, and a 1-3/4-inch overall length. Manufactured from steel and hardened to 60 to 65 HRC, it delivers the wear resistance and dimensional stability required for repetitive drilling operations. The headless, non-renewable design makes it well suited for permanent installation in drill jigs and fixtures where a flush surface profile is essential.

This bushing is used in drill jig assemblies across precision machining, tooling, metalworking, and general manufacturing environments. The press fit installation method locks the bushing securely into a prepared hole in the jig body without additional fasteners. It is appropriate for both production shops and tool rooms where consistent hole location is required across high-volume runs. Machinists, toolmakers, and maintenance technicians are the primary installers of this component.

Key Features

• Press fit installation - no fasteners required, locks permanently into jig body
• Headless design provides a flush, unobstructed surface profile
• Steel construction hardened to 60 to 65 HRC for extended wear life
• Inside diameter tolerance of +0.0001 to +0.0005 inches for precise drill guidance
• Meets ANSI standards for drill bushing dimensions and tolerances
• Non-renewable design suited for permanent jig installations

Compatibility

Designed as an OEM-style replacement or new-installation drill bushing for ANSI-standard press fit headless applications with an 11/32-inch bore and 3/4-inch body outside diameter in steel drill jig plates and fixtures.

Installation Notes

Installation is performed by machinists or toolmakers using a drill press or arbor press to seat the bushing flush into a precisely reamed hole in the jig body. The receiving hole in the jig plate must be machined to the correct press fit tolerance to ensure proper retention and alignment. Power down all machinery before handling or installing drill bushings. Once pressed in, this non-renewable bushing is not intended for removal and reinstallation.