Vermont Gage 112208840 Class Zz Minus Plug Pin Gage 8.84 Mm

Product Description

The VERMONT GAGE 112208840 is a Class ZZ Minus plug pin gage machined from steel and used to verify that a hole or bore does not exceed its maximum allowable size. Classified as a NoGo gage, it is inserted into the workpiece feature; if it enters, the part is rejected. The 8.84 mm diameter is held to a tolerance of 0.00508 mm, providing reliable, repeatable measurement performance. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for documented quality-control environments. The overall length is 2 inches. Machinists, quality technicians, and tool-room professionals use this gage in conjunction with micrometers, verniers, and other precision measuring devices.

This plug pin gage is designed for NoGo inspection of bored, drilled, or reamed holes at the 8.84 mm nominal diameter. It is used across general machining, tooling, and precision manufacturing environments wherever hole acceptance criteria must be verified to Class ZZ tolerances. Compatible with standard gage handle sets, it is also used to set and verify micrometers, verniers, and similar measuring instruments requiring a traceable reference standard.

Key Features

• Class ZZ Minus tolerance classification for NoGo hole inspection
• 8.84 mm measurement diameter held to 0.00508 mm tolerance
• Steel construction for durability in production and tool-room environments
• 10 Microfinish surface coating for consistent, low-drag insertion
• Includes Certificate of Accuracy with NIST traceability for documented QC use
• Compatible with standard plug gage handles and used to set precision measuring devices

Compatibility

Designed for NoGo inspection applications and for setting micrometers, verniers, and other precision measuring devices requiring an 8.84 mm Class ZZ reference standard.

Installation Notes

Plug pin gages are handled and used by quality technicians and machinists; no power tools or utility shutoffs are required. Store the gage in its protective case when not in use and avoid contact with abrasive surfaces that could alter the finished diameter. Clean the gage and the workpiece bore before inspection to prevent debris from affecting readings. Handle with clean cotton gloves or a lint-free cloth to minimize corrosion from skin oils.