Spi 19-526-3 Class Zz Minus Plug Pin Gage 0.5260 Inch

Product Description

The SPI 19-526-3 is a Class ZZ minus plug pin gage used to verify hole diameter tolerances in precision machining and quality control applications. It measures a nominal diameter of 0.5260 inches with a tolerance of 0.0002 inches, conforming to Class ZZ minus specifications. Machined from steel, this pin gage provides a reliable go/no-go reference for inspecting bored, drilled, or reamed holes. It is a standard tool in machine shops, manufacturing facilities, and inspection departments where dimensional accuracy must be confirmed before parts move to the next stage of production.

This gage is suited for use in production inspection, incoming quality control, and toolroom verification environments. It is appropriate for checking hole diameter conformance in metal, plastic, and composite workpieces across general manufacturing, aerospace component inspection, and precision fabrication settings. The 0.5260-inch nominal size fits a common range of drilled and reamed hole applications found in both prototype and high-volume production work.

Key Features

• Class ZZ minus tolerance class for go/no-go hole diameter verification
• 0.5260-inch nominal measurement diameter
• Tolerance of 0.0002 inches for precise dimensional inspection
• Steel construction for durability and wear resistance
• Compact and lightweight at 0.2 pounds for easy handling at the inspection station

Compatibility

Designed as a standard Class ZZ minus plug pin gage for use with compatible gage handle sets in production and toolroom inspection applications wherever a 0.5260-inch hole diameter reference is required.

Installation Notes

Pin gages are handled and used by quality control technicians and machinist inspectors. Always clean and deburr the part hole before inserting the gage to prevent damage to the gage surface. Store pin gages in a protective case away from moisture and debris to maintain calibration integrity. Periodic recalibration against traceable standards is recommended to ensure continued measurement accuracy.