Spi 19-324-3 Class Zz Minus Plug Pin Gage 0.324 in

Product Description

The SPI 19-324-3 is a Class ZZ minus plug pin gage used to verify hole diameters in precision machining and quality inspection applications. Sized at 0.324 inches in diameter with a tolerance of 0.0002 inches, this gage is built to confirm that a bore or hole is within acceptable dimensional limits. Constructed from steel for durability and dimensional stability, the 19-324-3 is a go/no-go style inspection tool suited to production floor checks and incoming material inspection. Machinists, quality technicians, and tool room personnel are the primary users of this type of gage.

This plug pin gage is appropriate for use in manufacturing environments where hole diameter verification is required to tight tolerances. The Class ZZ designation indicates a standard-grade gage suitable for general inspection work rather than master or reference-grade applications. It is commonly used to check drilled, reamed, or bored holes in metal, plastic, and composite workpieces across job shop and production settings.

Key Features

• 0.324 inch nominal diameter for direct hole inspection at that size
• Class ZZ tolerance class, suitable for general-purpose inspection
• Minus tolerance of 0.0002 inches ensures the gage does not exceed nominal size
• Steel construction for wear resistance and dimensional stability
• Compact form factor for easy handling on the production floor or in the tool room

Compatibility

Designed as an OEM-style inspection gage for any application requiring verification of a 0.324 inch nominal hole diameter using Class ZZ minus standards.

Installation Notes

Plug pin gages are handled and used by quality technicians and machinists; no installation trade license is required. Before use, clean the gage and the bore to remove chips, coolant, and debris that could affect the measurement. Do not force the gage into an undersized hole, as this can damage the gage surface and introduce measurement error. Store the gage in a protective case away from other metal tools to prevent nicking or corrosion of the precision-ground surface.