Vermont Gage 111166400 Class Zz Plus Plug Gage 0.664 in

Product Description

The VERMONT GAGE 111166400 is a Class ZZ Plus plug gage machined from tool steel for precise go inspection of bored holes, drilled openings, and precision-machined features. It measures a nominal diameter of 0.664 inches with a tolerance of 0.0002 inches and a surface finish of 10 microinches, meeting the requirements of ASME B89.1. Each unit ships with a Certificate of Accuracy backed by NIST traceability, making it suitable for use in calibrated measurement programs. Machinists, toolroom technicians, and quality-control inspectors use this gage to verify that machined features fall within acceptable dimensional limits before parts move to the next stage of production.

This plug gage is designed for go inspection applications and is also used to calibrate or set micrometers, verniers, and other measuring devices. It fits into standard quality-control workflows in manufacturing environments where hole-size verification is required to meet engineering tolerances. At 2.0 inches overall length, it is sized for comfortable single-hand use at the bench or on the shop floor. The ASME B89.1 standard compliance ensures the gage meets recognized national dimensional accuracy requirements for plain plug gages.

Key Features

• 0.664-inch nominal measurement diameter with 0.0002-inch tolerance per ASME B89.1
• 10-microinch surface finish for consistent, repeatable contact with machined surfaces
• Tool steel construction for durability and wear resistance in production environments
• Includes Certificate of Accuracy with NIST traceability for calibrated inspection programs
• 2.0-inch overall length for ergonomic bench and floor use
• Class ZZ Plus designation indicates enhanced tolerance class above standard ZZ gages

Compatibility

Designed for go inspection of holes and bored features at 0.664 inches nominal diameter, and for use as a setting standard with micrometers, verniers, and other precision measuring devices.

Installation Notes

Plug gages are handled and used by machinists and quality-control technicians — no power source or shutdown procedure is required. Clean the gage and the workpiece feature before use to prevent debris from affecting measurement accuracy. Do not force the gage into an undersized feature, as this can damage the gage surface and affect calibration. Store the gage in its protective case when not in use and have it re-certified at intervals consistent with your facility's calibration schedule.