Boneham CB00001104 Headless Drill Bushing 0.234 in Id Steel

Product Description

The BONEHAM CB00001104 is a press fit headless drill bushing designed to guide cutting tools with precision in jig and fixture applications. Manufactured from steel, this bushing features a 0.234 inch inside diameter and a 7/16 inch body outside diameter, with an overall length of 1 inch. The inside diameter is held to a tight tolerance of +0.0001 to +0.0004 inches, ensuring consistent hole location and accurate drill guidance. It carries industry code P and installs permanently into a drill jig plate without a locking head, making it well suited for high-volume production setups where a flush surface is required.

This bushing is used in metalworking, machining, and fabrication environments where repeatable hole placement is critical. It is a standard fixed-type bushing intended for jig plates in production or toolroom settings. The headless design keeps the working surface of the jig clear, which is preferred when clearance above the plate is limited or when multiple operations share the same hole location. Machinists, toolmakers, and fixture builders are the primary installers of this component.

Key Features

• Press fit installation method for a permanent, secure seating in the jig plate
• Headless design provides a flush, unobstructed work surface
• Inside diameter of 0.234 inches held to +0.0001 to +0.0004 inch tolerance for precise tool guidance
• Steel construction for durability and wear resistance in repeated drilling cycles
• 1 inch overall length suits standard jig plate thicknesses
• Not renewable — intended as a fixed, long-service bushing rather than a replaceable liner

Compatibility

Designed as an OEM-style fixed drill bushing for use in standard drill jig plates and fixtures requiring a press fit, headless installation with a 7/16 inch outside diameter bore.

Installation Notes

Installation is typically performed by a toolmaker or machinist using an arbor press to drive the bushing into a correctly sized and toleranced bore in the jig plate. The receiving bore in the plate must be machined to the appropriate interference fit specification to ensure proper retention. Do not hammer the bushing in freehand, as this can cause misalignment or damage to the bore. Verify bore diameter and surface finish before pressing to avoid galling the bushing outside diameter.