Spi 19-714-5 Class Zz Minus Plug Pin Gage 0.714 in

Product Description

The SPI 19-714-5 is a Class ZZ minus plug pin gage used to verify hole diameters and bore sizes in precision machining and inspection work. Measuring 0.714 inches in diameter, this go/no-go style gage checks whether a hole falls within tolerance by confirming the lower acceptable limit. It is made from steel for durability under repeated use. Machinists, quality control technicians, and toolroom professionals use plug gages like this one as part of standard dimensional inspection routines on the shop floor or in the inspection room.

Class ZZ plug gages are the most commonly used grade for general-purpose inspection of production parts. This minus-type gage holds a tolerance of 0.0002 inches, applied in the minus direction from the nominal diameter. It is well suited for checking holes in metal workpieces where moderate precision is required and where frequent, fast go/no-go inspection is the standard workflow. Typical applications include incoming inspection, in-process checks, and final part acceptance on machined components.

Key Features

• Class ZZ tolerance grade for general-purpose production inspection
• Minus-type designation — tolerance applied below nominal diameter for go-gage applications
• 0.714 inches nominal diameter for direct hole size verification
• 0.0002 inches tolerance for reliable dimensional control
• Steel construction for wear resistance and long service life

Compatibility

Designed as an OEM-style replacement or direct-use plug gage for Class ZZ minus applications requiring a 0.714-inch nominal diameter in standard inspection fixtures and gage handles.

Installation Notes

Plug pin gages are installed by hand into the gage handle or handle grip appropriate for the gage diameter range. Always clean the gage and the hole being checked before use to prevent debris from affecting the reading. Store the gage in its protective case when not in use to prevent damage to the precision ground surface. Gage calibration and periodic re-certification to ASME B89.1.5 standards is recommended to maintain measurement traceability.