Vermont Gage 111137100 Class Zz Plus Plug Gage 0.371 in

Product Description

The VERMONT GAGE 111137100 is a Class ZZ Plus plug gage machined from tool steel for dimensional go inspection of bored and reamed holes. It measures a nominal diameter of 0.371 inches with a tolerance of 0.0002 inches and a 10 microfinish surface finish, providing reliable, repeatable results on the shop floor or in a quality lab. Every unit ships with a Certificate of Accuracy traceable to NIST, satisfying documentation requirements for ISO and AS9100 quality systems. Machinists, toolroom technicians, and quality inspectors use this gage to verify hole sizes against engineering print tolerances before parts move to assembly.

This plug gage is suited for go inspection of precision-machined components in production and toolroom environments. It is used alongside set micrometers, verniers, and other measuring devices to confirm that drilled, bored, or reamed holes fall within specified limits. At 2.0 inches overall length, it handles standard shallow and moderate-depth holes in ferrous and non-ferrous workpieces. The Class ZZ Plus designation meets ASME B89.1 standards, making it appropriate for quality control workflows where gage traceability and documentation are required.

Key Features

• 0.371 inches nominal measurement diameter for precise hole verification
• 0.0002 inches tolerance to ASME B89.1 Class ZZ Plus specification
• 10 microfinish surface finish minimizes wear and ensures repeatable contact
• Tool steel construction for durability in production and toolroom use
• Includes Certificate of Accuracy with NIST traceability for quality documentation
• 2.0 inches overall length suitable for standard hole-depth applications

Compatibility

Designed for go inspection use with set micrometers, verniers, and other precision measuring devices in applications requiring ASME B89.1 Class ZZ Plus plug gage compliance.

Installation Notes

Plug gages should be handled and stored carefully to prevent nicks or corrosion that could affect accuracy. Clean the gage and the workpiece bore before each inspection. Never force the gage into an undersized hole, as this will damage the gage surface and alter calibration. Periodic recalibration against a traceable reference standard is recommended to maintain measurement integrity.