Spi 19-222-9 Class Zz Minus Plug Pin Gage 0.222 in

Product Description

The SPI 19-222-9 is a Class ZZ minus plug pin gage with a 0.222-inch nominal diameter, manufactured from steel. Plug pin gages are single-ended or double-ended precision tools used to verify that a drilled, reamed, or machined hole meets its specified diameter tolerance. Class ZZ designates the widest tolerance class in the ANSI/ASME B89.1.5 GO/NO-GO gage standard, making these gages appropriate for general-purpose inspection work where tight master-gage accuracy is not required. The minus designation means the gage is manufactured to the low side of the nominal diameter, which is standard for GO-gage members used to check minimum hole size. Tolerance on this gage is 0.0002 inches (0.0002 mm). Machinists, tool-and-die technicians, and quality-control inspectors are the typical users.

Class ZZ minus plug pin gages are used across a broad range of manufacturing, maintenance, and inspection environments. Common applications include verifying hole diameter on machined components, checking clearance fits, and confirming drill or reamer performance during setup. This gage is suited for production floor inspection, incoming-goods inspection, and general shop use where ANSI Class ZZ tolerance is acceptable. No specific compatible model or system compatibility information was provided for this SKU.

Key Features

• 0.222-inch nominal diameter for direct hole-size verification
• Class ZZ tolerance class per ANSI/ASME B89.1.5 for general-purpose inspection
• Minus designation indicates gage is ground to the low side of nominal — standard for GO gage applications
• 0.0002-inch (0.0002 mm) manufacturing tolerance
• Steel construction for durability in shop environments

Compatibility

Designed as a general-purpose Class ZZ minus plug pin gage suitable for use with standard gage handle sets and pin gage blocks accepting 0.222-inch diameter gage pins.

Installation Notes

Plug pin gages require no power source and are used by hand under ambient conditions. Handle the gage pin carefully to avoid dropping, which can cause damage to the precision ground surface and alter calibration. Store in a protective case away from other tooling to prevent contact damage. Periodic recalibration against a traceable master is recommended to confirm gage accuracy over time.