Vermont Gage 111343850 Class Zz Plus Plug Gage 0.4385 in

Product Description

The VERMONT GAGE 111343850 is a Class ZZ Plus plug gage machined from tool steel for dimensional go inspection of bored, reamed, or drilled holes. It measures 0.4385 inches in diameter with a tolerance of 0.0002 inches and carries a 10 microfinish surface finish for consistent, accurate contact. Each unit ships with a Certificate of Accuracy backed by NIST traceability, meeting the requirements of ASME B89.1. The overall length is 2.0 inches. This gage is installed and used by machinists, quality control technicians, and toolroom professionals performing in-process or final inspection tasks.

This plug gage is suited for go inspection applications in manufacturing and toolroom environments. It is used to verify that a hole falls within the acceptable dimensional range before assembly or further machining. Typical applications include checking bores produced by drilling, reaming, or boring operations. It is also used to calibrate and verify the accuracy of set micrometers, verniers, and other measuring devices where a known, traceable reference diameter is required.

Key Features

• Class ZZ Plus tolerance: 0.0002 inches for precise go inspection work
• 10 microfinish surface finish for consistent gage contact and reduced wear
• Tool steel construction for durability in production and toolroom use
• Certificate of Accuracy included with NIST traceability per ASME B89.1
• Overall length of 2.0 inches for standard handle compatibility
• Suitable as a reference standard for setting micrometers, verniers, and measuring devices

Compatibility

Designed for go inspection of holes with a nominal diameter of 0.4385 inches. Also used to set and verify micrometers, verniers, and other precision measuring devices requiring a traceable reference standard at this diameter.

Installation Notes

Plug gages should be handled by metrology technicians or qualified machinists familiar with ASME B89.1 inspection practices. Clean the gage and the bore thoroughly before use to prevent contamination from affecting the measurement. Never force the gage into a hole; light hand pressure is the correct technique for go inspection. Store the gage in its protective case when not in use to preserve the surface finish and dimensional integrity.