Vermont Gage 111238200 Class Zz Minus Plug Gage 0.3820 in

Product Description

The VERMONT GAGE 111238200 is a Class ZZ minus plug pin gage ground to a nominal diameter of 0.3820 inches with a tolerance of 0.0002 inches. This single-end pin gage is used to verify that a hole or bore does not exceed its maximum allowable size, functioning as a NoGo member in a go/no-go inspection routine. The steel construction provides durability and dimensional stability under normal shop conditions. Each unit ships with a Certificate of Accuracy with NIST traceability, confirming the measurement is documented to a national standard. Machinists, quality technicians, and precision inspection personnel are the primary users.

This pin gage is suited for dimensional inspection in manufacturing, toolroom, and quality control environments. It is used with setting micrometers, verniers, and other precision measuring devices when calibrating or verifying instrument zero references. The NoGo application means this gage is inserted into a finished bore or hole to confirm the opening has not been machined oversize. It is appropriate for use in both production-floor spot checks and formal inspection station setups where NIST-traceable documentation is required.

Key Features

• Class ZZ minus tolerance ground to 0.3820 inches diameter for NoGo inspection use
• Tolerance of 0.0002 inches provides reliable boundary verification
• Overall length of 2 inches suits standard pin gage handle chucks and direct hand use
• Steel construction resists wear under repeated insertion cycles
• 10 microfinish surface reduces friction and wear on precision bore walls
• Includes Certificate of Accuracy with NIST traceability for quality documentation and calibration records

Compatibility

Designed for use as a NoGo plug pin gage in go/no-go inspection setups and for setting micrometers, verniers, and other precision measuring devices requiring a traceable reference standard at 0.3820 inches.

Installation Notes

Pin gages should be handled with clean, dry hands or cotton gloves to prevent corrosion from skin oils. Before use, verify the gage and the bore being inspected are at the same ambient temperature to avoid thermal expansion error. Store the gage in its protective case when not in use and do not force it into undersized openings, as this can damage both the gage and the workpiece. Periodic recalibration against a NIST-traceable standard is recommended per your facility quality plan.