Spi 29-264-9 Class Zz Plus Plug Gage 0.264 in Dia

Product Description

The SPI 29-264-9 is a Class ZZ Plus plug gage designed to verify the inside diameter of machined bores, drilled holes, and precision-fit openings. It measures a nominal diameter of 0.264 inches with a tolerance of 0.0002 inches, making it suitable for go/no-go inspection work where dimensional accuracy is critical. Machined from steel, this gage is built to maintain its calibration under typical shop conditions. Machinists, toolmakers, quality control inspectors, and precision trade professionals use this type of gage as part of standard incoming and in-process inspection routines.

This plug gage is used wherever a 0.264-inch bore or hole must be verified to dimensional specification. Common applications include inspection of hydraulic fittings, valve bodies, machined housings, and close-tolerance mechanical assemblies. It is equally suited for job-shop floor inspection and dedicated quality control benches in light manufacturing and mechanical trade environments. The Class ZZ Plus classification indicates the gage meets established tolerance standards for plug gages used in production inspection.

Key Features

• Nominal measurement diameter of 0.264 inches for precise bore verification
• Class ZZ Plus tolerance of 0.0002 inches for production-grade inspection accuracy
• Steel construction for durability and dimensional stability under shop conditions
• Compact and lightweight at 0.2 pounds for easy single-hand use
• Single-piece package quantity suits individual or low-volume inspection setups

Compatibility

Designed as a standard Class ZZ Plus plug gage for use in any go/no-go or dimensional verification application requiring a 0.264-inch nominal bore measurement.

Installation Notes

Plug gages are handled and used by machinists and quality control inspectors and do not require power or fluid shutoff prior to use. Keep the gage clean and lightly oiled to prevent corrosion and maintain calibration. Do not force the gage into an undersized bore, as this can damage the gage surface and produce inaccurate readings. Store in a protective case away from heat sources to preserve dimensional stability.