Spi 19-341-7 Class Zz Minus Plug Pin Gage 0.341 in

Product Description

The SPI 19-341-7 is a Class ZZ minus plug pin gage with a nominal diameter of 0.341 inches, manufactured from steel. Plug pin gages are precision inspection tools used to verify hole diameter and location tolerance during quality control and machining operations. The Class ZZ designation indicates a minus tolerance configuration, meaning the gage is ground to the low side of the nominal dimension with a tolerance of 0.0002 inches. This tolerance class is standard for general inspection work where high-precision master-grade accuracy is not required but reliable go/no-go verification is essential.

This pin gage is suited for use in machine shops, manufacturing facilities, and inspection departments where consistent hole verification is part of the production workflow. Typical applications include checking drilled, reamed, or punched holes in metal or plastic workpieces. Machinists, quality technicians, and tool-and-die professionals routinely use Class ZZ gages for in-process and final inspection tasks on both low- and high-volume production runs.

Key Features

• Class ZZ minus tolerance configuration for general inspection use
• Nominal diameter of 0.341 inches for precise hole verification
• Tolerance of 0.0002 inches ensures repeatable, accurate measurement
• Steel construction for durability and dimensional stability
• Compact, lightweight design at 0.2 pounds for easy single-hand use

Compatibility

Designed as a standard Class ZZ minus plug pin gage suitable for use with conventional pin gage handles and sets for hole inspection in general machining and manufacturing applications.

Installation Notes

Plug pin gages are inspection instruments and do not require mechanical installation. Handle with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Store in a protective case away from other tooling to prevent surface damage that could affect accuracy. Calibration intervals should follow your facility's quality management procedures and applicable measurement standards.