Vermont Gage 111142600 Class Zz Plus Plug Gage 0.426 in

Product Description

The VERMONT GAGE 111142600 is a Class ZZ Plus cylindrical plug gage used to inspect hole diameters with precision and consistency. Manufactured from tool steel, this go-style gage measures a nominal diameter of 0.426 inches with a tolerance of 0.0002 inches, making it appropriate for quality-control applications where close dimensional verification is required. The working surface carries a 10 microfinish, reducing wear and ensuring accurate contact with the gauged surface. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting documentation requirements in calibrated inspection environments. Machinists, quality technicians, and metrology professionals are the primary users.

This plug gage is suited for incoming inspection, in-process quality checks, and final verification of bored, drilled, or reamed holes in manufacturing and machine shop environments. It is also used to set and verify micrometers, verniers, and other hand-measuring devices. The go configuration confirms whether a hole meets minimum diameter requirements without requiring additional setup. Typical applications span precision machining, tool-and-die, aerospace component inspection, and general metalworking where ASME B89.1 dimensional standards apply.

Key Features

• 0.426 inch nominal diameter with 0.0002 inch Class ZZ Plus tolerance
• Tool steel construction for durability and wear resistance in repeat-use inspection
• 10 microfinish surface for accurate, low-friction contact with the gauged bore
• Meets ASME B89.1 dimensional gage standards
• Includes Certificate of Accuracy with NIST Traceability for calibration documentation
• Go-style design confirms minimum acceptable hole diameter in a single pass

Compatibility

Designed as an OEM-style replacement and standard inspection tool for applications requiring Class ZZ Plus plug gages at 0.426 inches nominal diameter in accordance with ASME B89.1.

Installation Notes

Plug gages are handled and used by quality technicians and machinists in calibrated inspection environments. Before use, verify the gage handle is clean and free of debris that could affect the reading. Do not force the gage into an undersize hole, as this can damage the precision surface. Store in a protective case away from temperature extremes to maintain dimensional stability and NIST traceability.