Vermont Gage 112103660 Class Zz Plus Plug Gage 3.66mm

Product Description

The VERMONT GAGE 112103660 is a Class ZZ Plus plug gage machined from tool steel for dimensional go inspection of bored, drilled, and reamed holes. The gage checks whether a hole falls within the low end of an acceptable tolerance range, making it a standard tool for quality control on the shop floor or in the inspection room. It measures 3.66 mm in diameter with a tolerance of 0.00508 mm and carries a 10 microfinish surface finish. A Certificate of Accuracy with NIST traceability is included, supporting documentation requirements in regulated manufacturing and calibration environments.

This plug gage is suited for use in precision metrology applications where hole diameter verification is required before assembly or final inspection. Typical users include machinists, quality technicians, and tool room personnel working to ASME B89.1 standards. It is also used to set and verify micrometers, verniers, and other measuring devices. The compact overall length of 2.0000 inches makes it practical for both bench and in-process inspection tasks across light manufacturing, aerospace, and general machining environments.

Key Features

• Class ZZ Plus tolerance class to ASME B89.1 for reliable go inspection
• 3.66 mm diameter with 0.00508 mm tolerance for tight dimensional control
• 10 microfinish surface finish reduces wear and ensures consistent contact
• Tool steel construction for durability under repeated use
• Includes Certificate of Accuracy with NIST traceability for calibration records
• Suitable for setting micrometers, verniers, and other precision measuring devices

Compatibility

Designed for go inspection of holes nominally 3.66 mm in diameter; also used to set and verify micrometers, verniers, and other precision measuring devices in accordance with ASME B89.1.

Installation Notes

Plug gages should be handled by metrology or quality technicians familiar with ASME B89.1 inspection practices. Store the gage in its case when not in use to prevent nicks and corrosion on the precision ground surface. Clean the gage and the part bore with a lint-free cloth before use to avoid false readings caused by debris or oil film. Do not force the gage through an undersized hole, as this will damage the ground surface and alter its calibrated diameter.