Vermont Gage 111239300 Class Zz Minus Plug Pin Gage 0.3930 in

Product Description

The VERMONT GAGE 111239300 is a Class ZZ Minus plug pin gage designed for NoGo inspection work in precision measurement applications. It features a 0.3930-inch diameter measurement size with a tolerance of 0.0002 inches, making it suitable for verifying that a hole or bore does not exceed the maximum allowable size. The overall length is 2 inches. Each gage ships with a Certificate of Accuracy with NIST traceability, confirming the part meets established metrology standards. Machinists, quality control technicians, and tool-and-die professionals use this type of gage as part of a go/no-go inspection process to ensure dimensional conformance on finished parts.

This plug pin gage is used in production and inspection environments where tight bore tolerances must be verified quickly and reliably. It is well suited for use alongside micrometers, verniers, and other precision measuring devices to cross-check hole dimensions on machined components. The Class ZZ designation indicates a commercial-grade tolerance class appropriate for general shop-floor and incoming-inspection applications rather than master-gage or toolroom-grade work. Typical users include machinists and QC technicians working in light manufacturing, job shops, and production facilities.

Key Features

• 0.3930-inch measurement diameter with a 0.0002-inch tolerance for precise NoGo inspection
• Class ZZ Minus designation suitable for commercial-grade go/no-go gauging applications
• Steel construction for durability in shop-floor environments
• 10 microfinish surface coating for consistent contact and reduced wear
• Includes Certificate of Accuracy with NIST traceability for documented calibration compliance
• Compatible with set micrometers, verniers, and other standard measuring devices

Compatibility

Designed for use in NoGo inspection applications and for setting micrometers, verniers, and other precision measuring devices requiring a 0.3930-inch reference diameter.

Installation Notes

Plug pin gages are handled and used by machinists and quality control technicians and do not require mechanical installation. Store the gage in its protective case when not in use to prevent damage to the precision surface finish. Avoid dropping or applying lateral force to the gage, as this can alter the ground diameter and invalidate calibration. Recertification against a NIST-traceable standard is recommended per your facility's calibration schedule.