Vermont Gage 112104860 Class Zz Plus Plug Gage 4.86mm

Product Description

The VERMONT GAGE 112104860 is a Class ZZ Plus plug gage designed for dimensional inspection of bored holes, drilled passages, and precision-machined features. It measures 4.86 mm in diameter with a tolerance of 0.005 mm (0.00508 mm actual), making it suitable for go-type inspection work where tight dimensional control is required. Constructed from tool steel with a 10 microfinish coating, this gage provides repeatable, reliable readings over extended service life. Each unit ships with a Certificate of Accuracy traceable to NIST, satisfying documentation requirements for calibrated tooling in quality-controlled environments. Machinists, quality technicians, and metrology lab personnel are the primary users.

This plug gage is used in manufacturing, machine shop, and inspection environments where hole diameter verification is part of standard process control. It is well suited for go-inspection routines and for setting or verifying micrometers, verniers, and other measuring devices. The 4.86 mm diameter fits applications involving small-bore precision features common in aerospace, automotive, and general mechanical fabrication. Its compact overall length of 2 inches allows use in confined fixture setups and on standard gage handle assemblies.

Key Features

• Class ZZ Plus tolerance grade: 0.005 mm, suitable for go-type dimensional inspection
• Tool steel construction with 10 microfinish surface coating for durability and accurate seating
• NIST-traceable Certificate of Accuracy included with each unit
• Conforms to ASME B89.1 dimensional standards
• Overall length of 2.0 inches fits standard plug gage handles and fixture setups
• Suitable for setting micrometers, verniers, and other precision measuring devices

Compatibility

Designed for use with standard plug gage handle assemblies and compatible with go-inspection routines per ASME B89.1. Also used to set and verify micrometers, verniers, and other precision measuring devices requiring a 4.86 mm reference diameter.

Installation Notes

Plug gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Store in a protective case away from abrasive surfaces and temperature extremes. Before use, verify the gage is clean and free of burrs or debris that could affect seating. Calibrated tooling should be recertified at intervals consistent with your facility quality plan and applicable metrology standards.