Boneham P136CN Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM P136CN is a press fit headless drill bushing designed to guide cutting tools with precision during drilling operations. Built to ANSI standards, this bushing features an inside diameter of 0.086 inches (Wire Size No. 44), a body outside diameter of 13/64 inches, and an overall length of 3/8 inches. Manufactured from steel with a hardness rating of 60 to 65 HRC, it delivers the wear resistance required in production drilling fixtures and jig applications. The headless design allows flush or sub-flush installation where a flanged head would interfere with the workpiece or fixture plate.

This bushing is suited for use in drill jigs, tooling fixtures, and production setups where consistent hole location and repeatable accuracy are critical. The press fit installation method makes it appropriate for permanent installations in fixture bodies where the bushing is not intended to be routinely removed or replaced. It is commonly specified by tool and die makers, machinists, and manufacturing engineers working with close-tolerance drilling applications in metalworking and industrial fabrication environments.

Key Features

• Inside diameter of 0.086 inches (No. 44 wire size) with a tolerance of +0.0001 to +0.0004 inches for precise tool guidance
• Hardened steel construction rated 60 to 65 HRC for extended wear life in high-cycle drilling operations
• Headless design allows flush mounting where head clearance is restricted
• Press fit installation provides a permanent, vibration-resistant seat in the fixture body
• Meets ANSI standards for drill bushing geometry and dimensional consistency
• Compact overall length of 3/8 inches suits thin fixture plates and close-clearance setups

Compatibility

Designed as an ANSI-standard press fit headless drill bushing for use in drill jigs and tooling fixtures requiring a permanent, non-renewable bushing installation.

Installation Notes

Press fit bushings are installed by machinists or toolmakers using an arbor press or hydraulic press; never drive them in with a hammer, as impact can crack the fixture plate or distort the bushing bore. The receiving hole in the fixture body must be machined to the correct interference fit tolerance to ensure proper retention. Verify the bushing is seated fully flush or to the specified depth before use. Once pressed in, this bushing is not designed for removal and replacement during normal production cycles.