Boneham PT4810LK Press Fit Headless Drill Bushing

Product Description

The BONEHAM PT4810LK is a press fit headless drill bushing designed to guide drill bits and reamers with precision in jig and fixture applications. It features a 0.5 inch inside diameter, a 0.75 inch outside diameter, and an overall length of 0.625 inches. Manufactured from steel and hardened to 60 to 65 HRC, this bushing resists wear during repeated drilling operations. The headless, press fit design allows it to seat flush in a drill jig plate without additional fasteners. It conforms to ANSI standards and is sold individually. Licensed machinists, tool and die makers, and fixture builders are the typical installers.

This bushing is suited for use in drill jigs on production lines, machine shops, and precision fabrication environments where consistent hole location is required across multiple workpieces. The 0.5 inch bore accommodates standard half-inch drill bits and is held to a close inside diameter tolerance of plus 0.0001 to plus 0.0005 inches, ensuring repeatable positional accuracy. It is a permanent, non-renewable bushing intended for long-term press fit installation in a jig plate.

Key Features

• Press fit installation — seats permanently in the jig plate bore without fasteners
• Headless design sits flush with the plate surface, eliminating interference with the workpiece
• Steel construction hardened to 60 to 65 HRC for extended wear life
• Inside diameter tolerance of plus 0.0001 to plus 0.0005 inches for tight positional repeatability
• Conforms to ANSI standards for drill bushing dimensions and tolerances
• Industry code P identifies the press fit headless bushing series

Compatibility

Designed as an OEM-style replacement or original installation component for ANSI-standard drill jigs and fixtures requiring a press fit headless bushing with a 0.5 inch bore and 0.75 inch outside diameter.

Installation Notes

Press fit bushings are typically installed by machinists or tool and die makers using an arbor press or hydraulic press. The jig plate bore should be machined to the mating tolerance specified for the bushing outside diameter before installation. Do not hammer the bushing in directly without a proper driver to avoid distorting the bore. Once pressed in, this bushing is non-renewable and is not intended for removal and reuse.