Vermont Gage 911137400 Class Zz Plus Plug Gage 0.374 in

Product Description

The VERMONT GAGE 911137400 is a Class ZZ Plus plug gage used to verify bore and hole dimensions to a high degree of accuracy. It measures a nominal diameter of 0.374 inches with a tolerance of 0.0002 inches, making it suitable for go inspection applications where tight dimensional control is required. Manufactured from tool steel and finished in black oxide for corrosion resistance, this gage is designed for use by machinists, quality technicians, and metrology professionals working in production or inspection environments. Each unit ships with a Certificate of Accuracy that includes NIST traceability, supporting documented quality systems and audit requirements.

This plug gage is used in go inspection routines to confirm that a drilled, reamed, or bored hole falls within its minimum acceptable size limit. It is also suited for setting and verifying micrometers, verniers, and other measuring devices. Typical applications include machine shops, manufacturing floors, and inspection labs where bore acceptance checks are performed on machined components. The 0.374-inch diameter and 2.0-inch overall length make it practical for a range of standard bore configurations encountered in general metalworking and precision manufacturing.

Key Features

• Class ZZ Plus tolerance of 0.0002 inches for precise dimensional verification
• Tool steel construction for durability and wear resistance in production use
• Black oxide finish provides corrosion resistance and reduces light glare during inspection
• NIST-traceable Certificate of Accuracy included for quality system documentation
• Conforms to ASME B89.1 standards for plain plug gages
• Suitable for setting micrometers, verniers, and other measuring instruments

Compatibility

Designed as an OEM-style go inspection plug gage for use with standard bore inspection routines, and compatible as a setting reference for micrometers, verniers, and similar measuring devices requiring a 0.374-inch diameter reference standard.

Installation Notes

Plug gages are handled and used by quality technicians and machinists following standard metrology practices. Clean the gage and the bore thoroughly before use to prevent false readings caused by debris or coolant contamination. Never force the gage into a bore; excessive force can damage both the gage and the workpiece. Store the gage in its protective case when not in use to preserve the finish and dimensional integrity.