Spi 19-820-0 Class Zz Minus Plug Pin Gage 0.8200 in

Product Description

The SPI 19-820-0 is a Class ZZ minus plug pin gage designed to verify bore and hole dimensions in precision manufacturing and inspection environments. Built to Class ZZ tolerance standards, this pin gage measures a nominal diameter of 0.8200 inches with a minus tolerance of 0.0002 inches, ensuring go/no-go dimensional verification at the lower boundary of the tolerance zone. Constructed from steel, the gage provides the rigidity and wear resistance required for repeated use in shop-floor and quality-control settings. Machinists, tool-and-die makers, and quality inspectors rely on this type of gage for fast, reliable attribute inspection.

This pin gage is suited for dimensional inspection of drilled, reamed, or bored holes in metalworking, machining, and fabrication shops. It is appropriate for both incoming inspection and in-process quality checks where tight hole tolerances must be confirmed. The 0.8200-inch diameter makes it applicable to medium-bore inspection tasks commonly encountered in general manufacturing and precision machining operations.

Key Features

• Class ZZ minus tolerance specification for go/no-go attribute gauging
• Nominal measurement diameter of 0.8200 inches
• Tolerance of 0.0002 inches (0.0002 mm) for precise dimensional verification
• Steel construction for durability and dimensional stability
• Lightweight at 0.2 pounds for easy single-handed use during inspection

Compatibility

Designed as a standard Class ZZ minus plug pin gage for use with compatible pin gage handles and holders sized for 0.8200-inch diameter pins in general precision inspection applications.

Installation Notes

Pin gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Before use, clean the gage and the bore being inspected to remove chips, coolant, and debris that could affect measurement accuracy. Store the gage in its protective case when not in use to prevent nicks or damage to the gauging surface. Inspection personnel should follow applicable shop calibration and gage-control procedures to maintain measurement traceability.