Vermont Gage 901400200 Class Zz Plug Gage Set 50 Pc

Product Description

The VERMONT GAGE 901400200 is a 50-piece Class ZZ plug gage set used to verify hole diameters, slot widths, and distances between features to tight dimensional tolerances. Each gage is manufactured from steel with a black oxide finish and carries a minus tolerance of 0.0001 inches, consistent with Class ZZ go-gage standards. The set covers a range of 0.0115 to 0.0605 inches and ships with a Certificate of Accuracy traceable to NIST. Machinists, quality control technicians, and tool room personnel rely on sets like this for incoming inspection, in-process checks, and calibration of measuring instruments.

This plug gage set is suited for precision measurement tasks in machine shops, manufacturing facilities, and inspection departments. Typical applications include measuring small hole diameters in machined components, gaging slot widths and locations, performing NO-GO inspection routines, and setting micrometers, verniers, and other measuring devices to known references. The range of 0.0115 to 0.0605 inches addresses small-bore work common in tooling, fixture, and close-tolerance part production. The black oxide finish reduces corrosion risk during handling and storage.

Key Features

• 50-piece set covering 0.0115 to 0.0605 inches diameter range
• Class ZZ minus tolerance of 0.0001 inches per gage
• Steel construction with black oxide finish for corrosion resistance
• NIST traceable Certificate of Accuracy included
• Suitable for NO-GO gaging inspection, hole diameter measurement, slot gaging, and instrument calibration reference

Compatibility

Designed as a standard Class ZZ plug gage set for use with any workpiece or measuring application requiring hole or slot verification in the 0.0115 to 0.0605 inch range.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no installation in the traditional sense applies. Store gages in the provided case and keep them clean and lightly oiled to prevent corrosion. Do not force a gage into a hole — if the gage does not enter under light hand pressure, the feature is undersize. Periodically re-verify gages against NIST traceable masters to confirm they remain within tolerance.