Value Collection 616-8181 Class Zz Plug Gage Set 440 Pc

Product Description

The VALUE COLLECTION 616-8181 is a 440-piece Class ZZ plug gage set covering a diameter range of 0.061 to 0.5 inches. Each gage in the set holds a minus-tolerance of 0.0002 inches (0.0002 mm), making this set suitable for go/no-go inspection of drilled, reamed, or bored holes where dimensional control is critical. Class ZZ is the standard commercial tolerance class for plug gages and is widely used in production inspection environments. At 25 pounds, the set is sized for a dedicated gage bench or inspection station. Machinists, tool-and-die makers, and quality control technicians are the primary users of this type of set.

This plug gage set is used in machine shops, manufacturing facilities, and maintenance shops for verifying hole diameters across a broad range of workpiece types. The 0.061 to 0.5 inch coverage spans small-diameter precision holes through mid-range bores commonly found in mechanical assemblies, fixtures, and production parts. The 440-piece count provides incremental steps across the range, reducing the need for multiple individual gages. It is appropriate for both incoming inspection and in-process quality checks on the shop floor.

Key Features

• 440-piece set covers 0.061 to 0.5 inches in incremental diameter steps
• Class ZZ tolerance classification for standard commercial inspection applications
• Minus-tolerance type at 0.0002 inches per gage for consistent go/no-go checking
• 25-pound set weight reflects robust gage construction suitable for sustained shop use
• UNSPSC Code 41111600 for procurement and catalog classification

Compatibility

Designed as a general-purpose Class ZZ plug gage set for go/no-go hole inspection across standard inch-dimensioned workpieces with hole diameters from 0.061 to 0.5 inches.

Installation Notes

Plug gages are handled and used by machinists and quality control inspectors following standard metrology practices. Gages should be stored clean and lightly oiled to prevent corrosion and dimensional drift. Do not force a plug gage into a hole; insertion should require only light hand pressure to avoid damaging the gage or the workpiece. Periodic calibration against certified masters is recommended to maintain traceability and measurement integrity.