Spi 19-219-5 Class Zz Minus Plug Pin Gage 0.219 in

Product Description

The SPI 19-219-5 is a Class ZZ minus plug pin gage designed to verify hole diameters and bore dimensions in precision manufacturing and quality control applications. The gage measures 0.219 inches in diameter and is manufactured from steel for dimensional stability and wear resistance. With a tolerance of 0.0002 inches, it conforms to Class ZZ go/no-go gage standards, making it suited for inspection work where accurate hole sizing is required. Machinists, tool and die makers, and quality control technicians use this type of gage as part of standard dimensional inspection routines.

This plug pin gage is used in machine shops, fabrication facilities, and manufacturing environments where verifying bore and hole tolerances is part of production or incoming inspection. The minus designation indicates the gage is ground to the lower tolerance boundary of the nominal diameter, functioning as the go member in a go/no-go gage set or as a standalone check gage. It is appropriate for use on ferrous and non-ferrous workpieces in both light production and bench inspection settings.

Key Features

• Class ZZ tolerance class for general-purpose inspection use
• Minus designation ground to lower tolerance limit of nominal diameter
• 0.219-inch nominal diameter for precise bore verification
• 0.0002-inch tolerance for reliable dimensional checking
• Steel construction for durability and dimensional stability

Compatibility

Designed as an OEM-style replacement or direct-use Class ZZ plug pin gage suitable for standard go/no-go gage sets and precision bore inspection applications at 0.219 inches nominal diameter.

Installation Notes

Plug pin gages are handled and used by machinists, quality technicians, and tool and die professionals. Clean the gage and bore surfaces before use to prevent false readings caused by debris or coolant residue. Store the gage in its case or protective sleeve when not in use to prevent nicking or corrosion of the ground surface. Do not force the gage into a bore; if it does not pass freely, the hole is undersize.