Spi 19-153-6 Class Zz Minus Plug Pin Gage 0.153 in

Product Description

The SPI 19-153-6 is a Class ZZ minus plug pin gage designed to verify the minimum acceptable diameter of a machined hole or bore. Built from steel, this gage checks that a feature measures at or above its lower tolerance limit. Class ZZ gages are the standard working-grade gage for general inspection and production floor use. The 19-153-6 has a nominal diameter of 0.153 inches with a tolerance of 0.0002 inches, providing reliable go/no-go reference for precision hole checking. Machinists, quality inspectors, and tool-and-die technicians use plug pin gages as part of standard dimensional inspection workflows.

This gage is suited for dimensional inspection in machine shops, fabrication facilities, and production environments where hole diameter verification is part of quality control. It is appropriate for use on drilled, reamed, or bored holes requiring precise minimum-limit confirmation. The minus designation means the gage is ground below nominal, making it a go-gage application for verifying that a hole is at or above its specified lower limit.

Key Features

• Nominal diameter of 0.153 inches for precise hole verification
• Class ZZ tolerance grade suited for general production inspection
• Minus designation confirms lower-limit go-gage function
• Steel construction for durability in shop-floor use
• Tolerance of 0.0002 inches for reliable dimensional reference

Compatibility

Designed as a working-grade plug pin gage for inspection of holes with a nominal diameter of 0.153 inches in standard machined components and assemblies.

Installation Notes

Plug pin gages are handled and stored by metrology technicians or quality inspectors following standard gage-handling procedures. Clean the gage and the part bore before use to prevent debris from affecting the reading. Do not force the gage into a hole; insertion should be smooth and free of lateral pressure to avoid wear or damage. Store in a protective case away from moisture and corrosive materials to maintain calibration integrity.