Boneham P408JQ Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM P408JQ is a press fit headless drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations. Built to industry code P, this bushing features a 3/8 inch inside diameter, a 5/8 inch body outside diameter, and a 1/2 inch overall length. Constructed from hardened steel with a hardness rating of 60 to 65 HRC, it delivers wear resistance suited for high-cycle production environments. The headless design keeps the bushing flush with the jig plate surface, making it the standard choice when a clean, low-profile installation is required. Machinists and tool and die professionals install this type of bushing in drill jigs and fixtures.

This bushing is used in drilling fixtures across light manufacturing, machine shop, and tooling applications. Its press fit installation method makes it suitable for permanent or semi-permanent installations in jig plates where the bushing is not expected to be removed frequently. The ANSI-compliant design ensures dimensional interchangeability with standard drill jig components. It is a single-piece, non-renewable bushing, meaning it is pressed in place and not intended for routine field replacement without re-boring the liner hole.

Key Features

• Press fit installation - no retaining hardware required once seated
• Headless design sits flush with jig plate surface
• Hardened steel construction rated 60 to 65 HRC for extended wear life
• Inside diameter tolerance of plus 0.0001 to plus 0.0005 inches for consistent tool guidance
• Meets ANSI dimensional standards for interchangeability
• Compact 1/2 inch overall length suits thin jig plate applications

Compatibility

Designed as an OEM-style replacement or new-installation component for ANSI-standard drill jig fixtures requiring a press fit headless bushing with a 3/8 inch inside diameter and 5/8 inch outside diameter.

Installation Notes

Installation is performed by pressing the bushing into a precision-bored liner hole using an arbor press; hand hammering is not recommended as it can distort the bore or damage the jig plate. Verify the receiver hole diameter matches the bushing outside diameter tolerance before pressing to ensure proper interference fit. Once installed, the bushing is not designed for removal without dedicated extraction tooling or re-machining of the plate. This type of work is typically performed by a machinist or tool and die maker in a controlled shop environment.