Boneham CB00001275 Headless Drill Bushing 0.144in Id

Product Description

The BONEHAM CB00001275 is a press fit headless drill bushing designed to guide cutting tools with precision during drilling operations. Manufactured from steel, this bushing features an inside diameter of 0.144 inches (wire gauge #27), a body outside diameter of 5/16 inches, and an overall bushing length of 1 inch. It installs via press fit into a jig plate without the use of a head flange, making it well suited for applications where a flush or sub-flush installation is required. Machinists, tool-and-die makers, and fixture builders typically specify this type of bushing when building or repairing drill jigs for production environments.

This headless press fit bushing is used in drill jig fixtures across general machining, metal fabrication, and production tooling applications. The headless design allows it to sit flush within the jig body, which is common in high-volume or tight-clearance drilling setups. It is appropriate for both new fixture construction and replacement of worn liners in existing jig plates. This part is not renewable and is intended as a permanent press fit installation.

Key Features

• Press fit installation method for permanent, secure seating in jig plates
• Headless design allows flush mounting where head clearance is restricted
• Inside diameter tolerance of +0.0001 to +0.0004 inches for consistent drill guidance
• Steel construction provides durability in repetitive production drilling
• Non-renewable design for permanent fixture installations
• Bushing industry code P for standard identification and replacement reference

Compatibility

Designed as an OEM-style replacement or new-build component for steel drill jig fixtures requiring a press fit headless bushing with a 5/16-inch outside diameter and 0.144-inch inside diameter.

Installation Notes

Press fit drill bushings are installed by machinists or toolmakers using an arbor press or hydraulic press to seat the bushing flush into a precision-reamed hole in the jig plate. Ensure the jig plate hole is machined to the correct press fit tolerance before installation. Once pressed in, this bushing is not intended to be removed and replaced. Always deburr the jig plate bore and inspect for proper fit before pressing to avoid bushing distortion.