Spi 19-822-6 Class Zz Minus Plug Pin Gage 0.822 in

Product Description

The SPI 19-822-6 is a Class ZZ minus plug pin gage machined from steel for dimensional inspection of 0.822-inch diameter holes and bores. It is used to verify that a hole falls within tolerance by confirming go or no-go conditions during production or quality control checks. The minus designation means the gage is manufactured to the low side of the nominal diameter, consistent with Class ZZ standards. With a tolerance of 0.0002 inches, this gage is suited for general-purpose inspection work in shops, manufacturing floors, and maintenance environments where reliable hole verification is required.

This plug pin gage is a standard tool used in machining, fabrication, and mechanical maintenance settings. It is handled by machinists, quality control inspectors, and maintenance technicians working with close-tolerance bored holes, drilled passages, and precision-fit openings. The 0.822-inch diameter covers a common bore size found in mechanical assemblies across a range of industrial and commercial applications.

Key Features

• Class ZZ tolerance classification for general-purpose hole inspection
• Minus designation — gage diameter held to the low side of nominal for proper go-gage function
• 0.0002-inch tolerance for reliable dimensional verification
• Steel construction for durability under repeated shop use
• 0.822-inch nominal diameter covers common bore sizes in mechanical assemblies

Compatibility

Designed as a standard Class ZZ minus plug gage for general-purpose inspection of 0.822-inch diameter holes and bores in machined components and assemblies.

Installation Notes

Plug pin gages are handled by machinists and quality inspectors and do not require power or mechanical installation. Before use, clean both the gage and the bore being inspected to remove chips, oil, and debris that can affect readings. Store the gage in its protective case when not in use to prevent wear on the gage surface. Do not force the gage through a hole that does not accept it freely, as this can damage both the gage and the workpiece.