Boneham PT2812GZ Press Fit Headless Drill Bushing

Product Description

The BONEHAM PT2812GZ is a press fit headless drill bushing designed to guide cutting tools with precision in jig and fixture applications. With an inside diameter of 0.238 inches (Letter designation B, Industry Code P), an outside diameter of 7/16 inches, and an overall length of 3/4 inches, this bushing provides consistent hole location and protects the workpiece from tool wander. Constructed from steel, it is pressed directly into a drill jig plate without a locking head, keeping the profile flush with the jig surface. Machinists, tool and die makers, and production shops use this style of bushing wherever a permanent, low-profile guide is needed.

This bushing suits production drilling, reaming, and boring operations in metal fabrication, toolroom, and manufacturing environments. The headless design is preferred in applications where the bushing must sit flush or where clearance above the jig plate is limited. Its press fit installation makes it a fixed, non-renewable guide intended for high-repeat operations on a single setup. It is sized to the P-series industry standard, making it a straightforward replacement in existing P-series jig plate bores of matching diameter.

Key Features

• Inside diameter of 0.238 inches with a tight tolerance of +0.0001 to +0.0004 inches for accurate tool guidance
• Headless design sits flush with the jig plate surface, minimizing clearance requirements
• Press fit installation creates a permanent, fixed mounting without additional hardware
• Steel construction provides wear resistance in repetitive drilling and reaming cycles
• Meets P-series bushing industry code standards for dimensional interchangeability

Compatibility

Designed as a P-series industry-standard press fit headless drill bushing for use in drill jig plates with a 7/16-inch bore sized to accept a press fit installation.

Installation Notes

Installation is performed by toolroom machinists or fixture builders using an arbor press or hydraulic press to seat the bushing flush in a prepared jig plate bore. Power down all associated machinery before pressing the bushing into the plate. Do not hammer the bushing in directly without a proper pressing tool, as this can damage the bore or distort the bushing ID. Verify bore diameter and finish in the jig plate before installation to ensure the press fit interference is within specification.