Spi 19-720-2 Class Zz Minus Plug Pin Gage 0.72 in

Product Description

The SPI 19-720-2 is a Class ZZ minus plug pin gage used to verify bore and hole diameters in production inspection and quality control applications. Measuring 0.72 inches in diameter, this gage is made from steel and carries a tolerance of 0.0002 inches, conforming to Class ZZ minus specifications. Class ZZ is the standard tolerance class for general-purpose inspection gages used in shop-floor and incoming inspection environments. Machinists, toolmakers, and quality technicians rely on pin gages like this one to confirm that drilled, reamed, or bored features meet drawing tolerances before parts move to assembly or shipment.

This pin gage is suited for use in manufacturing facilities, machine shops, and inspection departments performing dimensional verification on metal or plastic components. It is appropriate for checking hole acceptance in both low-volume prototype work and higher-volume production runs. The minus designation indicates the gage is ground to the lower boundary of the tolerance range, making it appropriate for go-gage applications where confirming minimum acceptable hole size is required.

Key Features

• Class ZZ minus tolerance class for general-purpose shop and inspection use
• 0.72 inch nominal diameter for direct bore verification
• Tolerance of 0.0002 inches for precise dimensional control
• Steel construction for durability and wear resistance in production environments
• Minus designation suitable for go-gage inspection applications

Compatibility

Designed as a standard Class ZZ minus plug pin gage for general-purpose dimensional inspection of holes and bores in machined components across a range of manufacturing and quality assurance applications.

Installation Notes

Pin gages are handled and used by machinists and quality control technicians and do not require mechanical installation. Store gages in a clean, dry case to prevent corrosion and surface damage that could affect measurement accuracy. Handle with clean, dry hands or cotton gloves to avoid introducing moisture or oils that may cause rust on the steel surface. Calibrate and verify gage condition periodically per your facility inspection procedures and applicable metrology standards.