Boneham PT244GB Press Fit Headless Drill Bushing

Product Description

The BONEHAM PT244GB is a headless press fit drill bushing used to guide drill bits and other cutting tools with precision in jig and fixture applications. It features a 0.199 inch inside diameter and a 3/8 inch outside diameter, with an overall length of 1/4 inch. Machined from steel, this bushing is pressed directly into a drill jig plate without a locking head, seating flush with the jig surface for a clean, low-profile installation. The inside diameter holds a tight tolerance of plus 0.0001 to plus 0.0004 inches, ensuring accurate tool guidance and repeatable hole location across production runs.

This bushing is suited for use in machine shop, toolroom, and production drilling operations where a permanent, non-renewable jig bushing is required. It is appropriate for applications using a number 8 wire gauge or equivalent drill size. Typical installations include drill jigs used in metalworking, fabrication, and assembly fixtures where consistent hole placement is critical. It is installed by qualified machinists or toolmakers during jig and fixture construction or maintenance.

Key Features

• Inside diameter: 0.199 inches with a tolerance of plus 0.0001 to plus 0.0004 inches for precise tool guidance
• Outside diameter: 3/8 inch for press fit installation into standard jig plate bores
• Overall length: 1/4 inch — compact headless profile seats flush with jig surface
• Headless design eliminates the raised collar, allowing unobstructed workpiece clamping
• Steel construction provides durability under repeated drilling cycles
• Industry bushing code P designation for straightforward cross-reference and replacement

Compatibility

Designed as a permanent press fit replacement or new-install drill bushing for standard jig and fixture plates requiring a headless P-series bushing with a 0.199 inch inside diameter and 3/8 inch outside diameter.

Installation Notes

Installation is performed by a machinist or toolmaker using an arbor press to seat the bushing flush into a precision-bored jig plate hole. Ensure the mating bore in the jig plate matches the bushing outside diameter tolerance before pressing. Do not use a hammer directly on the bushing face, as this can distort the inside diameter. Once pressed in, this bushing is non-renewable and is not intended for field removal and reuse.