Boneham CB00001102 Headless Drill Bushing 5/16 in Id

Product Description

The BONEHAM CB00001102 is a press fit headless drill bushing in industry code P, designed to guide twist drills and reamers accurately through jig plates and fixture bodies. With a 0.3125 inch inside diameter and a 0.5 inch outside diameter, this bushing accepts a 5/16 inch cutting tool and presses directly into a prepared hole without a locking collar or head flange. The overall length is 1 inch. Material is steel hardened to 60 to 65 HRC, providing long service life under repeated drilling cycles. Inside diameter tolerance is held to +0.0001 to +0.0005 inches for tight tool guidance.

This bushing is used in production drilling, jig boring, and tooling fixture applications across machining and fabrication shops. It is suited for situations where the bushing must sit flush with or below the jig plate surface, making it appropriate for close-tolerance multi-spindle setups and gang-drilling fixtures. Machinists, tool-and-die makers, and fixture builders are the primary installers. The part meets ANSI standards for drill bushing geometry and dimensional consistency.

Key Features

• Press fit installation — no locking head or collar required
• Industry code P headless design for flush or sub-flush mounting
• Steel construction hardened to 60 to 65 HRC for wear resistance
• Inside diameter tolerance of +0.0001 to +0.0005 inches for precise tool guidance
• ANSI-compliant geometry for standard jig plate compatibility
• Non-renewable design — intended as a fixed, long-term installed bushing

Compatibility

Designed as an OEM-style replacement or new-installation drill bushing for standard jig plates and tooling fixtures requiring a headless press fit bushing with a 5/16 inch bore and 1/2 inch outside diameter.

Installation Notes

Press fit bushings are typically installed by a machinist or tool-and-die professional using an arbor press or hydraulic press. The receiving hole in the jig plate must be sized and finished to the appropriate interference fit tolerance before installation. Do not drive the bushing in with a hammer or impact tool, as this can damage the bore geometry. Verify alignment and seating before securing the fixture for production use.