Vermont Gage 112309310 Class Zz Plus Plug Gage 9.31mm

Product Description

The VERMONT GAGE 112309310 is a Class ZZ Plus plug gage designed for precision hole inspection in tool rooms, quality labs, and production environments. Built from tool steel with a 10 microfinish surface, it checks hole diameters at a nominal 9.31 mm with a tolerance of 0.00508 mm. Each unit ships with a Certificate of Accuracy traceable to NIST, making it suitable for documented inspection programs. Machinists, quality technicians, and metrologists use this gage to confirm go-condition acceptance on drilled, reamed, or bored holes to ASME B89.1 standards.

This plug gage is used in go inspection routines for verifying that a hole falls within its lower tolerance limit. Typical applications include setting micrometers, calibrating verniers, and validating other measuring devices. It is well suited to both low-volume tool-room work and higher-volume production line inspection where a traceable, ASME B89.1-compliant reference is required.

Key Features

• Class ZZ Plus tolerance class per ASME B89.1 for go-condition hole inspection
• 9.31 mm nominal diameter with 0.00508 mm tolerance for tight conformance
• 10 microfinish surface on tool steel for consistent, wear-resistant gauging contact
• Includes Certificate of Accuracy with NIST traceability for documented QC programs
• Overall length of 2.0000 inches suits standard handle or bench use
• Lightweight at 0.06 pounds for easy single-hand operation during repetitive inspection

Compatibility

Designed as an OEM-style go plug gage for use with standard plug gage handles and inspection fixtures accepting a 9.31 mm diameter gage member. Also suitable for use as a setting standard for micrometers, verniers, and other measuring devices as noted in the product application data.

Installation Notes

Plug gages are handled and stored by quality technicians and tool room personnel, not installed in a mechanical system. Clean and inspect the gage and the bore before gauging to avoid false readings from chips or coolant. Never force a plug gage into a hole; if resistance is felt, the bore is undersized and forcing the gage can damage the gage member or the workpiece. Store in the provided case or on a clean, dry surface away from sources of heat and vibration to preserve calibration.