Spi 19-633-7 Class Zz Minus Plug Pin Gage 0.633 in

Product Description

The SPI 19-633-7 is a Class ZZ minus plug pin gage used to verify bore and hole diameters to a high degree of dimensional accuracy. Machined from steel, this pin gage checks whether a feature meets its minimum size condition using a minus tolerance convention. The 19-633-7 carries a tolerance of 0.0002 inches, placing it in the Class ZZ category suited for production inspection work where close but not ultra-precision tolerances are required. Machinists, quality control technicians, and tool and die professionals rely on plug pin gages like this to confirm hole acceptance quickly and reliably during in-process and final inspection.

This gage is appropriate for use in manufacturing shops, machine shops, and quality inspection environments where 0.633-inch nominal diameter holes must be verified. It fits standard pin gage handle systems, allowing it to be used as part of a larger set or as a standalone go or no-go check depending on inspection protocol. Typical applications include verifying drilled, reamed, or bored holes in metal components across general machining and precision fabrication workflows.

Key Features

• Class ZZ minus tolerance classification for production-level bore inspection
• 0.0002 inches tolerance for reliable dimensional verification
• 0.633-inch nominal diameter for direct hole size checking
• Steel construction for durability in shop floor environments
• Compatible with standard plug gage handle systems

Compatibility

Designed as an OEM-style replacement or direct-use plug pin gage for standard handle-style pin gage sets used in production inspection of 0.633-inch nominal diameter features.

Installation Notes

Pin gages are handled and used by quality technicians and machinists following standard metrology practices. Store pin gages in a protective case and apply a light coat of instrument oil when not in use to prevent corrosion. Do not force a pin gage into a hole; insertion should be smooth with light hand pressure only. Clean gaging surfaces and the part being inspected before use to ensure accurate readings.