Spi 19-196-5 Class Zz Minus Plug Pin Gage 0.1960 in

Product Description

The SPI 19-196-5 is a Class ZZ minus plug pin gage designed to verify hole diameters with a nominal measurement size of 0.1960 inches. Built from hardened steel, this go/no-go style gage delivers a tolerance of 0.0002 inches, making it suitable for precision inspection work in manufacturing, machining, and quality control environments. Licensed machinists, tool-and-die makers, and QC inspectors use plug gages like this one to confirm drilled, reamed, or punched hole sizes conform to engineering specifications before parts move to the next stage of production.

This gage is suited for inspection of small-diameter holes in metal, plastic, or composite workpieces where dimensional accuracy is critical. The minus designation means the gage is ground to the low side of the tolerance band, which is standard practice for Class ZZ plug gages used in general-purpose inspection. It is commonly used on production floors, in tool cribs, and in inspection departments across precision manufacturing, aerospace, and automotive supply chain operations.

Key Features

• Nominal measurement diameter of 0.1960 inches for small-bore hole verification
• Class ZZ tolerance grade at 0.0002 inches for general-purpose inspection use
• Minus tolerance designation — ground to the low side of the tolerance band
• Hardened steel construction for wear resistance and dimensional stability
• Compact, single-piece design for use in handheld or bench inspection setups

Compatibility

Designed as a general-purpose Class ZZ minus plug pin gage for verifying hole diameters of 0.1960 inches in standard production and inspection applications.

Installation Notes

Plug pin gages are handled and used by machinists, QC inspectors, and tool-and-die technicians — no power source or lockout procedure is required. Store the gage in a protective case or sleeve when not in use to prevent surface damage that could affect measurement accuracy. Clean the gage and the workpiece hole before use to remove chips, oil, or debris that could produce false readings. Calibration and periodic re-certification against NIST-traceable masters is recommended practice to maintain gage integrity over time.