Boneham CB00001128 Press Fit Headless Drill Bushing

Product Description

The BONEHAM CB00001128 is a headless press fit drill bushing used to guide drill bits and reamers with precision during machining and fabrication operations. It carries industry code P and is manufactured from steel for durability in production and tooling environments. The inside diameter measures 0.277 inches with a tolerance of +0.0001 to +0.0005 inches, the body outside diameter is 7/16 inches, and the overall bushing length is 1 inch. This bushing seats permanently into a jig plate or fixture without a locking collar, making it suited for high-volume repetitive drilling where flush installation is required.

This bushing is used in drill jig fixtures across metalworking, tool-and-die, and precision machining applications. Its headless design allows the bushing to sit flush with the surface of the jig plate, which is common in production environments where clearance above the workpiece is limited. Machinists, tool makers, and fixture builders select this type of bushing when a fixed, non-renewable guide is appropriate for the operation. It is not designed for renewable or slip-type bushing applications.

Key Features

• Press fit installation seats the bushing permanently into the jig plate bore
• Headless design sits flush with the fixture surface, eliminating head clearance issues
• Inside diameter of 0.277 inches with close tolerance of +0.0001 to +0.0005 inches for accurate drill guidance
• Body outside diameter of 7/16 inches and overall length of 1 inch
• Steel construction for wear resistance in repetitive drilling operations
• Industry code P for straightforward cross-referencing with standard drill bushing catalogs

Compatibility

Designed as a standard P-series press fit headless drill bushing for use in drill jig fixtures requiring a permanent, flush-mount guide bushing with a 0.277 inch inside diameter and 7/16 inch outside diameter.

Installation Notes

Press fit drill bushings are installed by tool makers or machinists using an arbor press or hydraulic press to seat the bushing into a precision-bored hole in the jig plate. The mating bore in the fixture should be machined to the appropriate press fit tolerance before installation. Do not drive the bushing with a hammer directly on the bore face, as this can distort the inside diameter. Once pressed in, the bushing is not intended for removal or reuse.