Boneham P208FT Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM P208FT is a press fit headless drill bushing used to guide drill bits and reamers with precision in jig and fixture applications. Classified under Industry Code P, this bushing features a 3/16 inch (0.1875 inch) inside diameter with a tight inside diameter tolerance of +0.0001 to +0.0004 inches, a 5/16 inch outside diameter, and an overall length of 1/2 inch. Manufactured from steel hardened to 60 to 65 HRC, it is designed for permanent installation in drill jigs where accurate, repeatable hole location is required. Machinists and toolmakers in production and job shop environments are the primary installers.

This bushing is suited for use in fixed drill jig setups where a single operation — drilling, reaming, or similar cutting — is performed at the same location repeatedly. The headless profile allows the bushing to sit flush with the jig plate surface, making it appropriate for applications where a projecting head would interfere with workpiece clearance or fixture design. It is non-renewable, meaning it is pressed permanently into the jig plate rather than designed for routine replacement during production runs. ANSI standards compliance ensures dimensional interchangeability with other ANSI-conforming tooling components.

Key Features

• Headless design sits flush with jig plate surface — no protruding flange
• Inside diameter tolerance of +0.0001 to +0.0004 inches for precise drill guidance
• Steel construction hardened to 60 to 65 HRC for wear resistance under repeated drilling cycles
• Press fit installation method — no additional fasteners or locking components required
• Meets ANSI standards for dimensional interchangeability
• Non-renewable, permanent-mount design suited for high-volume fixed jig applications

Compatibility

Designed as an ANSI-conforming, permanent press fit headless drill bushing for use in standard drill jig plates where a 3/16 inch ID, 5/16 inch OD bushing is specified.

Installation Notes

Installation is performed by machinists or toolmakers using a press or arbor press to drive the bushing flush into a precision-bored jig plate hole. The mating bore in the jig plate must be sized to the bushing outside diameter within appropriate interference fit tolerances to ensure secure retention. Because this is a non-renewable bushing, removal after installation will typically damage the bushing or the jig plate bore. Always verify bore diameter and surface finish before pressing to avoid dimensional issues that require rework.