Spi 19-995-0 Class Zz Minus Plug Pin Gage 0.995 in

Product Description

The SPI 19-995-0 is a Class ZZ minus plug pin gage machined to a 0.995 inch nominal diameter with a minus tolerance of 0.0002 inches. Plug pin gages are used to verify that a hole or bore meets minimum dimensional requirements. The minus designation means the gage is manufactured at the low end of the tolerance band, making it suitable for go/no-go inspection workflows where confirming minimum acceptable hole size is the priority. At 0.2 pounds, the gage is compact and easy to handle during bench inspection or in-field quality checks. Steel construction provides the hardness and wear resistance required for repeated use in dimensional inspection applications.

This gage is suited for quality control technicians, machinists, and toolroom professionals working in manufacturing, fabrication, or maintenance environments. It is used to inspect drilled, reamed, or bored holes in metal, plastic, or composite workpieces. Class ZZ is the most widely used commercial-grade tolerance class for general-purpose plug gages, making this an appropriate choice for production inspection where tight metrology-grade accuracy is not required but reliable go/no-go results are needed.

Key Features

• Class ZZ tolerance class suitable for general-purpose production inspection
• Minus designation confirms minimum hole size acceptance in go/no-go applications
• 0.0002 inch tolerance for reliable dimensional verification
• Steel construction for hardness and durability through repeated use
• 0.995 inch nominal diameter covers a common bore size range
• Lightweight at 0.2 pounds for easy handling at the bench or in the field

Compatibility

Designed as a standard Class ZZ minus plug pin gage for general-purpose go/no-go hole inspection of 0.995 inch diameter bores in production and toolroom settings.

Installation Notes

Plug pin gages are handled by quality control technicians and machinists and require no power or installation. Clean the gage and the bore being inspected before use to prevent debris from affecting readings. Store the gage in a protective case away from moisture and temperature extremes to preserve dimensional accuracy. Follow ASME B89.1.5 or applicable shop standards for gage calibration intervals and handling procedures.