Spi 19-052-0 Class Zz Minus Plug Pin Gage 0.052 in

Product Description

The SPI 19-052-0 is a Class ZZ minus plug pin gage machined to a nominal diameter of 0.052 inches with a tolerance of 0.0002 inches. Plug pin gages are used to verify hole diameters by go/no-go inspection — confirming whether a drilled, reamed, or punched hole falls within an acceptable size range. The Class ZZ designation identifies this as a working gage suited for production floor inspection rather than laboratory-grade calibration. Constructed from steel, this gage is a standard tool for machinists, quality control technicians, and tool and die professionals working to close-tolerance specifications.

This pin gage is used in manufacturing and machine shop environments where precise hole verification is required. It is appropriate for inspecting small-diameter holes in metal, plastic, or composite workpieces. The minus tolerance designation means the gage diameter is ground to the lower limit of the nominal size, consistent with standard minus gage conventions for go-side inspection work. It suits applications in general metalworking, aerospace component inspection, automotive parts production, and precision fabrication wherever 0.052-inch hole conformance must be confirmed.

Key Features

• Nominal diameter of 0.052 inches for small-hole inspection
• Class ZZ tolerance class — standard working gage for production inspection
• Minus tolerance ground to 0.0002 inches for lower-limit go-side verification
• Steel construction for durability on the production floor
• Single-piece package quantity suited for individual technician use

Compatibility

Designed as a standard Class ZZ minus plug pin gage for use with pin gage handle sets and gage blocks compatible with 0.052-inch diameter working gages in general production inspection applications.

Installation Notes

Pin gages are handled and used by quality control technicians and machinists; avoid touching the gage surface with bare hands to prevent corrosion from skin oils. Store in a protective case or gage block organizer when not in use. Clean and lightly oil the gage after each use to maintain surface integrity and measurement accuracy.