Boneham PT368IW Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM PT368IW is a press fit headless drill bushing designed to guide drill bits and cutting tools with precision in jig and fixture applications. Manufactured from steel, this bushing installs without a head, making it suitable for flush-mount or close-clearance setups where a flanged design would interfere. The inside diameter is 0.332 inches with an inside diameter tolerance of +0.0001 to +0.0005 inches, providing tight, repeatable tool guidance. The body outside diameter measures 9/16 inches and the overall bushing length is 1/2 inch. Press fit installation means the bushing is driven into a prepared hole and held in place by interference fit without additional fasteners. Machinists, toolmakers, and fixture builders work with this component in production and prototype environments.

This bushing is used in drill jigs, tooling plates, and machining fixtures where consistent hole location is required across repeated operations. The headless design allows the bushing to sit flush with or below the surface of a jig plate, which is useful in applications where workpieces or clamps must pass over the fixture surface without obstruction. The steel construction handles the wear demands of production drilling. Industry code P identifies the inside diameter series per standard bushing classification. This part is non-renewable, meaning it is pressed in permanently and not intended for routine field replacement without re-pressing.

Key Features

• Press fit installation — no fasteners required, held by interference fit
• Headless design for flush or sub-flush mounting in jig plates
• Inside diameter of 0.332 inches with tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• Steel construction for wear resistance in repetitive drilling operations
• Overall bushing length of 1/2 inch suits shallow fixture plates
• Non-renewable design — permanently pressed into fixture bore

Compatibility

Designed as a standard press fit headless drill bushing for use in machining jigs and tooling fixtures requiring a 0.332 inch inside diameter and 9/16 inch body outside diameter. Classified under bushing industry code P per standard drill bushing conventions.

Installation Notes

Installation is performed by a machinist or toolmaker using a press or arbor press to drive the bushing into a precisely reamed or bored hole sized for the required interference fit. The receiving hole must be prepared to the correct diameter and finish before pressing to avoid damage to the bushing bore or fixture plate. Do not hammer the bushing in directly without a proper press driver to avoid cocking or deforming the bushing. Because this is a non-renewable bushing, removal typically requires pressing out and replacing both the bushing and potentially re-machining the host bore.