Boneham PT368IM Press Fit Headless Drill Bushing

Product Description

The BONEHAM PT368IM is a press fit headless drill bushing designed to guide drill bits and boring tools with precision in jig and fixture applications. Manufactured from steel and hardened to 60 to 65 HRC, this bushing provides a durable wear surface that maintains hole-location accuracy under repeated drilling cycles. The headless design sits flush with the jig plate surface, making it suitable for applications where a protruding head would interfere with workpiece clearance. Machinists and tool-and-die professionals install this style of bushing in production drill jigs where consistent hole placement is critical across high part volumes.

This bushing carries Bushing Industry Code P and conforms to ANSI standards, making it a direct fit for standard P-series bushing applications. With a 0.3125 inch (5/16 inch) inside diameter, a 9/16 inch body outside diameter, and a 1/2 inch overall length, it is sized for light to medium drilling operations in steel, aluminum, and similar materials. Press fit installation means the bushing is driven permanently into the jig plate bore and is not intended for field removal or interchange during production runs.

Key Features

• Press fit installation for permanent, rigid seating in drill jig plates
• Hardened steel construction at 60 to 65 HRC for extended wear life
• Headless design mounts flush with jig surface, eliminating head interference
• Inside diameter tolerance of +0.0001 to +0.0005 inches ensures consistent drill guidance
• Conforms to ANSI bushing standards, Bushing Industry Code P
• Non-renewable design; intended for fixed, permanent installation

Compatibility

Designed as a standard P-series press fit headless drill bushing per ANSI specifications, suitable for use in drill jigs and fixtures accepting a 9/16 inch body outside diameter bushing with a 5/16 inch bore.

Installation Notes

Installation is performed by machinists or tool-and-die technicians using a press or arbor press to drive the bushing into a properly reamed jig plate bore. The receiving bore must be held to the appropriate interference fit tolerance to ensure the bushing seats without distortion. Do not hammer the bushing in freehand, as uneven force can cock the bushing and compromise drill guidance accuracy. Once pressed in, this bushing is not designed for removal or reuse.