Boneham P8812NP Press Fit Headless Drill Bushing

Product Description

The BONEHAM P8812NP is a press fit headless drill bushing manufactured from steel, designed to guide drill bits with precision in jig and fixture applications. With an inside diameter of 53/64 inches and a body outside diameter of 1-3/8 inches, this bushing maintains consistent hole location across repeated drilling operations. The overall bushing length is 3/4 inches. The inside diameter is held to a tight tolerance of +0.0002 to +0.0006 inches, ensuring accurate drill guidance with minimal deviation. Machinists, tool and die makers, and production drilling operators install this type of bushing into hardened jig plates or fixture bodies as a permanent, non-renewable guide.

This bushing suits production and toolroom environments where a fixed, press-installed drill guide is required. Industry code P identifies it within the standard bushing classification system used across jig bushing catalogs. The headless profile keeps the bushing flush with or below the jig plate surface, making it appropriate for close-tolerance work where a flanged head would interfere with the workpiece or clamp. It is not designed for renewable or slip-renewable applications.

Key Features

• Inside diameter: 53/64 inches with +0.0002 to +0.0006 inch tolerance for precise drill guidance
• Body outside diameter: 1-3/8 inches for stable press fit retention in jig plates
• Overall bushing length: 3/4 inches
• Headless design sits flush with jig plate surface, avoiding interference with workpieces or clamps
• Steel construction provides wear resistance under repeated drilling cycles
• Permanent, non-renewable installation — not a slip or liner bushing
• Bushing industry code P for standard catalog cross-reference

Compatibility

Designed as an OEM-style press fit headless drill bushing for use in standard jig plates and fixture bodies requiring a permanent drill guide of 53/64 inch inside diameter.

Installation Notes

Installation is performed by machinists or tool and die makers using an arbor press or hydraulic press to seat the bushing into a precision-bored jig plate hole. Power down all drilling equipment before working in the fixture. The bushing bore in the jig plate must match the outside diameter tolerance for proper press fit retention — verify the mating hole size before pressing. Do not use impact tools to drive the bushing, as this can distort the bore and affect drill guidance accuracy.