Value Collection 616-81416 Class Zz Plug Gage Set 125 Pc

Product Description

The VALUE COLLECTION 616-81416 is a 125-piece Class ZZ plug gage set covering a diameter range of 0.626 to 0.75 inches. Class ZZ is the most commonly used tolerance grade for general-purpose go/no-go inspection of drilled, reamed, or bored holes in production and maintenance environments. Each gage in the set carries a minus tolerance of 0.0002 inches, keeping the working member within the tolerance zone of the hole being checked. The set weighs 31.5 pounds and is suited for use by machinists, toolroom technicians, and quality control inspectors who need a broad range of wire-type plug gages in a single kit.

This set is used in machine shops, manufacturing facilities, and maintenance departments where hole diameter verification is a routine task. The 0.626 to 0.75 inch range covers a wide band of fractional and decimal hole sizes common in general metalworking, fixture building, and equipment repair. With 125 individual gages, the set provides close step increments across the range, reducing the need to interpolate between sizes and supporting faster, more reliable inspection decisions.

Key Features

• Class ZZ tolerance grade for general-purpose go/no-go hole inspection
• Minus tolerance type at 0.0002 inches per gage member
• 125-piece set spans 0.626 to 0.75 inches in fine increments
• Suitable for production inspection, toolroom work, and maintenance applications
• 31.5 pound set weight reflects a comprehensive, fully populated range

Compatibility

Designed as a general-purpose Class ZZ plug gage set for verifying hole diameters in the 0.626 to 0.75 inch range across standard metalworking and manufacturing inspection applications.

Installation Notes

Plug gages are precision instruments and should be handled, stored, and used by qualified machinists or quality control personnel familiar with dimensional inspection practices. Clean the gage and the workpiece bore before use to prevent debris from affecting readings or damaging gage surfaces. Never force a plug gage into a bore; if the gage does not enter under light hand pressure, the hole is undersized. Store gages in their designated case away from heat sources and corrosive environments to maintain calibration integrity.