Spi 29-697-0 Class Zz Plus Plug Gage 0.697 in

Product Description

The SPI 29-697-0 is a Class ZZ Plus plug gage designed to verify bore and hole diameters to a nominal size of 0.697 inches with a tolerance of 0.0002 inches. Built from steel, this go/no-go style instrument gives machinists, quality technicians, and tool-and-die professionals a fast, reliable method for confirming dimensional accuracy during production or inspection. The tight tolerance class makes it suitable for applications where hole size conformance is critical and manual measurement tools would introduce too much variability.

Class ZZ Plus plug gages are used in machine shops, manufacturing facilities, and maintenance environments where hole diameter verification is part of a standard quality control workflow. This gage is appropriate for inspecting drilled, reamed, or bored holes in metal, plastic, or composite workpieces. At 0.697 inches nominal diameter, it fits common shaft-fit and bearing-bore inspection scenarios encountered in general mechanical assembly and precision machining operations.

Key Features

• Nominal diameter of 0.697 inches for direct bore verification
• Class ZZ Plus tolerance of 0.0002 inches for precise dimensional inspection
• Steel construction for durability and wear resistance in shop environments
• Compact and lightweight at 0.2 pounds for easy single-hand use
• Single-piece package quantity supports individual replacement or spot procurement

Compatibility

Designed as an OEM-style replacement or direct-procurement plug gage for use in standard Class ZZ Plus gage applications requiring a 0.697-inch nominal bore measurement.

Installation Notes

Plug gages are handled and used by quality control technicians and machinists and require no permanent installation. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the steel surface. Do not force the gage into an undersized hole, as this can damage the gage surface and compromise measurement accuracy. Store in a protective case away from heat sources to maintain dimensional stability.