Spi 29-065-0 Class Zz Plus Plug Gage 0.065 in Dia

Product Description

The SPI 29-065-0 is a Class ZZ Plus plug gage designed for precision hole and bore measurement in industrial and manufacturing environments. Built from steel, this plug gage measures bores with a nominal diameter of 0.065 inches and holds a tolerance of 0.0002 inches, making it suitable for high-accuracy go/no-go inspection work. Machinists, quality control technicians, and tool-and-die professionals use Class ZZ Plus plug gages to verify that drilled, reamed, or bored holes fall within acceptable dimensional limits during production inspection and incoming part verification.

This gage is well-suited for shop-floor inspection, tool room quality checks, and incoming material verification in precision machining operations. At 0.065 inches nominal diameter, it is sized for small-bore applications common in fine mechanical assemblies, instrument components, and close-tolerance manufactured parts. Its steel construction provides the durability and dimensional stability expected in a working gage used repeatedly throughout a production shift.

Key Features

• Class ZZ Plus tolerance rating at 0.0002 inches for high-accuracy inspection
• 0.065 inch nominal measurement diameter for small-bore applications
• Steel construction for dimensional stability and wear resistance
• Single-piece packaging suitable for individual tool room or inspection station use
• Compact and lightweight at 0.2 pounds for easy handling at point of inspection

Compatibility

Designed as a precision inspection gage for verifying 0.065 inch nominal bore diameters in go/no-go inspection applications across general machining and manufacturing environments.

Installation Notes

Plug gages are handled and used by quality control technicians and machinists — no installation in the traditional sense is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion and maintain dimensional accuracy. Never force the gage into a bore; if resistance is felt, the hole is undersize and should be re-inspected. Store in a protective case away from temperature extremes to preserve calibration integrity.