Spi 19-263-3 Class Zz Minus Plug Pin Gage 0.263 in

Product Description

The SPI 19-263-3 is a Class ZZ minus plug pin gage with a 0.263-inch nominal diameter, manufactured from steel for durability in precision measurement applications. It is used to verify bore and hole dimensions to tight tolerances, with a tolerance of 0.0002 inches on the minus side. Class ZZ designates it as a working gage suitable for production inspection rather than master or reference standards. Machinists, tool and die makers, quality technicians, and metrology lab personnel use pin gages like this one to confirm whether a hole is within specified limits before a part moves to the next stage of production.

This gage is suited for use in machine shops, manufacturing facilities, and quality control environments wherever a 0.263-inch nominal hole diameter must be verified. It is appropriate for checking drilled, reamed, or broached bores in metal, plastic, or composite workpieces. The minus designation means the gage is ground to the low side of the nominal diameter, which is standard for go-gage applications in the Class ZZ range.

Key Features

• Class ZZ tolerance class — standard working gage for production inspection
• Minus designation ground to the low side of the nominal 0.263-inch diameter
• Tolerance of 0.0002 inches for precise bore verification
• Steel construction for wear resistance and dimensional stability
• Single-piece gage format for straightforward go or no-go inspection workflow

Compatibility

Designed as a Class ZZ minus plug pin gage for use in standard pin gage handles or holders that accept 0.263-inch diameter gage pins, consistent with common inch-series pin gage set systems.

Installation Notes

Pin gages are handled and used by quality technicians and machinists and do not require mechanical installation. Store and handle the gage with clean, dry hands or lint-free gloves to prevent corrosion and dimensional contamination. Clean the gage and the bore being measured before use to ensure accurate readings. Do not force the pin into a hole; insertion should be smooth and controlled to protect both the gage and the workpiece.