Vermont Gage 111241500 Class Zz Minus Plug Pin Gage 0.4150 in

Product Description

The VERMONT GAGE 111241500 is a Class ZZ minus-tolerance plug pin gage machined from steel for use in NoGo dimensional inspection. The gage measures a nominal diameter of 0.4150 inches with an overall length of 2 inches and a tolerance of 0.0002 inches. Class ZZ designates a minus tolerance grind, meaning the gage member falls below the nominal diameter by that tolerance value, which is the correct configuration for NoGo inspection applications. Each unit ships with a Certificate of Accuracy backed by NIST traceability. The 10 microfinish surface coating provides the smooth, consistent contact surface required for repeatable gage readings. Metrology technicians, quality control inspectors, and machinists use this type of gage to verify that a hole does not exceed its maximum allowable size.

This plug pin gage is used in NoGo inspection routines where the gage must not pass through an acceptable hole. It is also used to set and verify micrometers, verniers, and other precision measuring devices. Typical applications include incoming inspection, in-process quality checks on machined bores, and final inspection in both production and tool-room environments. The 0.4150-inch diameter makes it suitable for checking holes in that size range across a wide range of materials and machined components.

Key Features

• Class ZZ minus tolerance grind for NoGo inspection use
• 0.4150-inch nominal measurement diameter with 0.0002-inch tolerance
• Overall length of 2 inches for standard hand-held use
• Steel construction for durability in production and tool-room environments
• 10 microfinish surface for consistent, repeatable contact
• Includes Certificate of Accuracy with NIST traceability

Compatibility

Designed for use as a NoGo plug gage in dimensional inspection routines and as a setting standard for micrometers, verniers, and other precision measuring instruments requiring a 0.4150-inch reference diameter.

Installation Notes

Plug pin gages should be handled with clean, dry hands or cotton gloves to prevent corrosion from skin contact. Store the gage in its case when not in use and allow it to reach ambient temperature before use if brought from a cold environment, as thermal expansion can affect readings. Do not force the gage into a hole; if resistance is felt during NoGo inspection, the hole is within tolerance and the gage should not pass. Periodic recalibration against a NIST-traceable standard is recommended to maintain measurement integrity.