Spi 19-050-4 Class Zz Minus Plug Pin Gage 0.05 in

Product Description

The SPI 19-050-4 is a Class ZZ minus plug pin gage designed to verify hole diameter tolerances in precision machining and inspection applications. With a nominal diameter of 0.05 inches and a tolerance of 0.000200 inches, this gage provides reliable go/no-go measurement for quality control on the shop floor or in the inspection lab. Constructed from steel, it offers the durability and dimensional stability required for repeatable gauging work. Machinists, toolmakers, and quality control technicians use pin gages like this one to confirm bore sizes on drilled, reamed, or punched features.

This gage is suited for use in precision manufacturing environments where tight hole tolerances must be verified. It is appropriate for incoming inspection, in-process checks, and final quality audits across metalworking, fabrication, and general manufacturing operations. The Class ZZ designation indicates a standard precision grade commonly used for inspection of production parts rather than master or reference gage applications.

Key Features

• Nominal diameter of 0.05 inches for small-bore inspection
• Class ZZ minus tolerance of 0.000200 inches for reliable go/no-go gauging
• Steel construction for durability and dimensional stability
• Compact single-pin format suitable for bench and floor inspection use
• Package quantity of 1 pin gage per unit

Compatibility

Designed as a standard Class ZZ minus plug pin gage for use in precision hole inspection across general metalworking and manufacturing applications where a 0.05-inch nominal diameter is required.

Installation Notes

Pin gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Store the gage in its protective case when not in use to avoid nicks or surface damage that could affect measurement accuracy. Clean the gage and the part bore before use to remove chips, coolant, or debris. Do not force the gage into an undersized bore, as this can damage both the gage and the workpiece.