Vermont Gage 111439350 Class Zz Minus Plug Pin Gage 0.3935 in

Product Description

The VERMONT GAGE 111439350 is a Class ZZ Minus plug pin gage used to perform NoGo inspection of drilled, reamed, or bored holes. The gage measures a nominal diameter of 0.3935 inches with a tolerance of 0.0002 inches, conforming to Class ZZ minus standards for reliable pass/fail gauging. Machined from steel with a 10 microfinish surface coating, it delivers consistent contact and wear resistance under regular shop use. Each unit ships with a Certificate of Accuracy traceable to NIST, supporting quality-management and calibration documentation requirements. Overall length is 2 inches.

This pin gage is suited for use in machine shops, inspection departments, and production environments where hole diameter verification is required. It is appropriate for NoGo inspection applications as well as setting micrometers, verniers, and other measuring devices to a known reference diameter. Typical users include machinists, quality-control inspectors, and toolroom technicians working to tight dimensional tolerances in both job-shop and production settings.

Key Features

• Class ZZ Minus tolerance of 0.0002 inches for precise NoGo gauging
• 0.3935 inch nominal measurement diameter
• Steel construction with 10 microfinish surface for consistent contact and durability
• Overall length of 2 inches for easy single-hand handling
• Includes Certificate of Accuracy with NIST traceability for calibration records
• Suitable for setting micrometers, verniers, and other measuring instruments

Compatibility

Designed as an OEM-style Class ZZ Minus plug pin gage for NoGo hole inspection and reference use with micrometers, verniers, and comparable measuring devices requiring a 0.3935 inch diameter reference standard.

Installation Notes

Pin gages are handled and used by machinists and quality-control inspectors without requiring power tools or electrical shutoff. Clean the gage and the bore being checked before use to prevent debris from affecting measurement accuracy. Store the gage in its protective case when not in use to prevent surface damage that could affect dimensional integrity. Follow your facility calibration schedule and handle only by the knurl or handle to avoid thermal expansion from hand heat.