Boneham P204EF Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM P204EF is a press fit headless drill bushing designed to guide cutting tools with precision in jig and fixture applications. It features a 0.1405-inch inside diameter, a 5/16-inch body outside diameter, and a 1/4-inch overall length. Constructed from steel hardened to 60 to 65 HRC, the P204EF delivers the wear resistance required for repetitive drilling operations. The inside diameter holds a tight tolerance of +0.0001 to +0.0004 inches, ensuring consistent hole location across production runs. Machinists, toolmakers, and fixture builders install this bushing in drill jigs where a flush, headless profile is required.

This bushing suits metal fabrication, machining, and assembly fixture applications where a permanent, non-renewable guide bushing is appropriate. The headless design sits flush with the jig plate surface, making it the right choice when clearance above the plate is restricted. It is classified under industry code P and meets ANSI standards. Typical use involves press fitting the bushing into a hardened jig plate to establish a repeatable drill-entry point for number 28 wire gauge drill bits.

Key Features

• 0.1405-inch inside diameter sized for number 28 wire gauge drill bits
• 5/16-inch body outside diameter with 1/4-inch overall length
• Steel construction hardened to 60 to 65 HRC for extended tool life
• Inside diameter tolerance of +0.0001 to +0.0004 inches for precise hole location
• Headless profile mounts flush with jig plate surface
• Meets ANSI standards; permanent non-renewable design

Compatibility

Designed as an ANSI-standard press fit headless drill bushing for use in drill jigs and fixtures requiring a permanent, non-renewable guide bushing with a P industry code designation.

Installation Notes

Installation is performed by pressing the bushing into a properly sized and toleranced hole in a hardened jig plate using an arbor press or hydraulic press. Ensure the receiving hole diameter and finish conform to ANSI bushing press fit specifications before installation. The bushing is not designed for removal after installation; selecting the correct size before pressing in is critical. Always power down and de-energize any associated machinery before performing jig maintenance or bushing replacement work.