Vermont Gage 111441850 Class Zz Minus Plug Pin Gage 0.4185 in

Product Description

The VERMONT GAGE 111441850 is a Class ZZ Minus plug pin gage machined to a 0.4185-inch diameter for NoGo inspection work. Pin gages in the ZZ class carry a minus tolerance of 0.0002 inches, meaning the gage is manufactured to the low side of the nominal diameter. This makes it the correct tool for verifying that a hole or bore does not exceed its maximum allowable size. The overall length is 2 inches. Each unit ships with a Certificate of Accuracy with NIST Traceability, which satisfies quality-management and audit requirements in production and inspection environments. Machinists, quality technicians, and tool-room professionals are the primary users.

This pin gage is used in dimensional inspection on the shop floor, in the tool room, or in a metrology lab. The NoGo application means the gage should not pass through a conforming hole — if it does, the feature is out of tolerance. It is also used to set and verify micrometers, verniers, and other measuring devices that require a known reference diameter. Suitable for use in both production-line go/no-go inspection and calibration workflows in light manufacturing, aerospace, and general machining environments.

Key Features

• Class ZZ Minus tolerance of 0.0002 inches for NoGo inspection applications
• 0.4185-inch nominal diameter machined in steel for durability and dimensional stability
• 10 Microfinish surface coating for consistent gauge-to-bore contact
• Includes Certificate of Accuracy with NIST Traceability for quality-system compliance
• 2-inch overall length suits standard pin gage handles and collet-style holders
• Also suitable for setting micrometers, verniers, and other measuring instruments

Compatibility

Designed for use as a NoGo plug pin gage in standard pin gage handles and collet-style holders that accept 0.4185-inch diameter pins. Compatible with workflows requiring NIST-traceable reference standards for micrometer and vernier calibration.

Installation Notes

Pin gages should be handled with clean cotton or nitrile gloves to prevent corrosion from skin oils. Before use, wipe the gage surface with a lint-free cloth and confirm the certificate of accuracy is on file for your quality records. Apply light gage oil when storing to protect the steel surface from oxidation. Do not force the gage through a hole — a correctly sized NoGo gage should not enter a conforming feature.