Boneham P3212IB Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM P3212IB is a press fit headless drill bushing manufactured from hardened steel for use in precision drilling and machining operations. With a 0.29 inch inside diameter and a 0.5 inch outside diameter, this bushing guides drill bits, reamers, and other cutting tools to maintain accurate hole location and alignment. The overall length is 0.75 inches. Hardness runs 60 to 65 HRC, which provides the wear resistance required in high-cycle production jigs and fixtures. This is a non-renewable, permanently installed bushing conforming to ANSI standards. It is installed by machinists, toolmakers, and fixture builders in manufacturing and fabrication environments.

The P3212IB fits applications where a permanent, low-profile bushing is required in a drill jig, fixture plate, or tooling block. The headless profile sits flush with the jig plate surface, making it well suited for close-tolerance work where a flanged head would interfere with the workpiece or clamping arrangement. Inside diameter tolerance is held to plus 0.0001 to plus 0.0005 inches, ensuring consistent tool guidance across repeated operations. Typical users include tool and die shops, production machinists, and precision fabricators working with steel or aluminum fixtures.

Key Features

• Press fit installation — no retaining hardware required once seated in the jig plate
• Headless design sits flush with the jig plate surface to avoid workpiece interference
• Hardened steel construction rated 60 to 65 HRC for extended wear life in high-cycle applications
• Inside diameter tolerance of plus 0.0001 to plus 0.0005 inches for precise tool guidance
• ANSI-conforming dimensions for interchangeability with standard jig bushing tooling
• Non-renewable design for permanent fixture installations

Compatibility

Designed as an OEM-style press fit headless drill bushing conforming to ANSI standards, suitable for use in standard drill jig plates and fixture tooling that accept a 0.5 inch outside diameter bushing with a 0.75 inch overall length.

Installation Notes

Press fit bushings are installed by toolmakers or machinists using an arbor press or hydraulic press to seat the bushing flush and square in the jig plate bore. The receiving bore must be machined to the correct interference fit tolerance before installation. Once pressed in, the bushing is not intended to be removed or replaced. Always verify bore diameter and finish before pressing to avoid galling or bushing damage.