Spi 19-593-3 Class Zz Minus Plug Pin Gage 0.593 in

Product Description

The SPI 19-593-3 is a Class ZZ minus plug pin gage with a 0.593-inch nominal diameter, manufactured from steel for lasting dimensional stability. Class ZZ is the standard tolerance grade used for general-purpose go/no-go inspection work, and the minus designation means the gage is ground to the lower boundary of the tolerance band. At 0.0002-inch tolerance, this gage gives machinists, quality technicians, and tool room inspectors a reliable reference for checking bore and hole dimensions in production and inspection environments. Its compact form and lightweight construction make it easy to handle during routine inspection tasks.

This plug pin gage is suited for dimensional inspection of bored holes, drilled passages, and machined features in manufacturing and fabrication settings. It is commonly used in machine shops, quality control labs, and tool rooms where hole size verification is a routine part of the workflow. The 0.593-inch diameter targets mid-range bore sizes encountered in mechanical assemblies, fluid system components, and general precision machining. Machinists and quality inspectors rely on this type of gage to verify conformance to print tolerances during in-process and final inspection checks.

Key Features

• Class ZZ tolerance grade for general-purpose dimensional inspection
• Minus plug designation provides a lower-boundary reference for bore verification
• 0.0002-inch tolerance for consistent and repeatable measurement results
• Steel construction resists wear and maintains calibration over extended use
• Lightweight at 0.2 pounds, easy to handle during bench or floor inspection

Compatibility

Designed as a standard Class ZZ minus plug pin gage for use with go/no-go inspection systems and gage block sets in general-purpose hole and bore measurement applications.

Installation Notes

Plug pin gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Store in a protective case away from abrasive materials and temperature extremes to preserve calibration. Before use, verify the gage against a certified master or gage block set as part of a documented calibration program. No tooling or fasteners are required for use, but the measuring surface should be kept clean and lightly oiled when not in service.