Vermont Gage 112318870 Class Zz Plus Plug Gage 18.87mm

Product Description

The VERMONT GAGE 112318870 is a Class ZZ Plus plug gage designed for precision dimensional inspection of bored holes, machined bores, and other cylindrical features. It measures an 18.87 mm nominal diameter with a tolerance of 0.00508 mm, meeting ASME B89.1 standards for gage accuracy. The plug body is manufactured from tool steel with a 10 micro finish coating. Each unit ships with a Certificate of Accuracy traceable to NIST. Machinists, quality technicians, and tool-and-die tradespeople use this gage to verify Go condition acceptance in production and inspection environments.

This plug gage is suited for Go inspection of precision-machined components in manufacturing and quality control settings. It is compatible with use alongside micrometers, vernier calipers, and other calibrated measuring devices as a reference standard or workpiece acceptance tool. Typical applications include incoming inspection, in-process checks on CNC-machined bores, and final inspection on close-tolerance assemblies. The 2.0000-inch overall length provides adequate handle clearance for standard gage handles and inspection fixtures.

Key Features

• 18.87 mm nominal diameter, Class ZZ Plus tolerance of 0.00508 mm per ASME B89.1
• Tool steel construction with 10 micro surface finish coating for wear resistance
• Go inspection configuration for fast accept or reject decisions on cylindrical bores
• Includes Certificate of Accuracy with NIST traceability for ISO and AS9100 documentation requirements
• 2.0000-inch overall length fits standard plug gage handles

Compatibility

Designed as an OEM-style Go plug gage for use with standard gage handles and inspection fixtures in dimensional quality control applications.

Installation Notes

Plug gages of this type are handled by quality technicians and machinists during inspection operations, not installed in a system. Store the gage in its protective case when not in use to prevent nicking the precision ground surface. Clean the gage pin and bore with a lint-free cloth before use to remove debris that would affect readings. Do not force the gage into a bore; excessive insertion force can damage the gage or the workpiece and will compromise measurement validity.