Spi 19-704-6 Class Zz Minus Plug Pin Gage 0.704 in

Product Description

The SPI 19-704-6 is a Class ZZ minus plug pin gage used to verify bore and hole dimensions with a go/no-go inspection method. Sized at 0.704 inches in diameter, this gage is manufactured from steel and holds a tolerance of 0.0002 inches, making it suitable for precision dimensional inspection in machine shops, manufacturing facilities, and quality control environments. Licensed metrology technicians and machinists use plug gages like this to confirm that drilled, reamed, or bored features meet drawing tolerances before parts advance to the next stage of production.

This gage fits standard inspection workflows for holes in the 0.704-inch nominal diameter range. Class ZZ is the commercial-grade gage class, appropriate for shop-floor inspection of general-tolerance machined components. The minus designation indicates the gage is ground to the lower end of the tolerance band, functioning as the go member in a matched gage set. It is commonly used in job shops, production machining operations, and incoming quality inspection stations.

Key Features

• 0.704-inch nominal diameter for direct bore inspection at that dimension
• Class ZZ minus tolerance classification for commercial-grade go-gage applications
• 0.0002-inch tolerance provides reliable dimensional verification
• Steel construction for durability under repeated shop-floor use
• Compact and lightweight at 0.2 pounds for easy single-hand operation

Compatibility

Designed as a commercial-grade plug pin gage for use in standard go/no-go inspection of machined bores and holes with a 0.704-inch nominal diameter.

Installation Notes

Plug pin gages are handled and applied by machinists, quality control inspectors, and metrologists. Before use, clean the gage and the bore being inspected to remove chips, coolant, and debris that could affect the measurement. Apply light, consistent hand pressure when inserting the gage — never force it or use tools to drive it into a feature. Store the gage in its protective case and periodically re-qualify it against a calibrated master to maintain traceability.