Vermont Gage 111286800 Class Zz Minus Plug Pin Gage 0.8680 in

Product Description

The VERMONT GAGE 111286800 is a Class ZZ minus plug pin gage used to verify bore and hole dimensions in precision machining and inspection work. Built from steel, this pin gage measures a nominal diameter of 0.8680 inches with a tolerance of 0.0002 inches, placing it firmly in the Class ZZ category suitable for production-floor NoGo inspection. The overall length is 2 inches. Each unit ships with a Certificate of Accuracy with NIST traceability, confirming the gage meets documented dimensional standards before it reaches the shop floor.

This plug pin gage is used in applications where precise hole acceptance or rejection is required. It functions as a NoGo member for checking that a bore has not been machined oversize. It is also suitable for setting micrometers, verniers, and other measuring devices to a known reference diameter. Typical users include machinists, quality control inspectors, and metrology technicians working in production machining, tool and die, and precision fabrication environments. Both residential and commercial manufacturing shops use Class ZZ gages for in-process and final inspection.

Key Features

• Class ZZ minus tolerance designation for NoGo inspection applications
• 0.8680 inch nominal diameter with 0.0002 inch tolerance
• Steel construction for durability and dimensional stability
• 10 micro surface finish coating for consistent contact surface quality
• Includes Certificate of Accuracy with NIST traceability
• Suitable for setting micrometers, verniers, and other measuring devices

Compatibility

Designed for use as a NoGo plug gage in bore inspection routines and as a reference standard for setting micrometers, verniers, and comparable measuring instruments requiring a 0.8680 inch reference diameter.

Installation Notes

Plug pin gages are handled and used by machinists and quality control technicians — no permanent installation is required. Keep the gage surface clean and lightly oiled when not in use to prevent corrosion on the steel body. Avoid dropping or forcing the gage into a bore; damaged or burred gage surfaces will produce unreliable inspection results. Store in the original case or a protective sleeve to maintain the certified surface finish and dimensional integrity.