Spi 19-067-8 Class Zz Minus Plug Pin Gage 0.067 in

Product Description

The SPI 19-067-8 is a Class ZZ minus plug pin gage used to verify hole diameters and bore tolerances in precision machining and inspection applications. With a nominal diameter of 0.067 inches and a tolerance of 0.0002 inches, this gage is manufactured from steel to deliver consistent, repeatable measurements. Class ZZ is the standard tolerance class for go/no-go inspection in general manufacturing, making this pin suitable for quality control work on production floors, inspection benches, and tool rooms. Machinists, quality technicians, and tool and die professionals use pin gages like this one to confirm dimensional conformance on drilled, reamed, or bored features.

This pin gage is suited for light-duty inspection tasks in shops handling close-tolerance work at the sub-0.1-inch diameter range. It fits into standard pin gage handle sets or can be used as a hand-held pin for quick go/no-go checks on small-diameter holes. Typical applications include verifying pilot holes, nozzle bores, orifice diameters, and precision-drilled passages in metal and plastic components. The minus designation means the gage is ground to the lower end of the Class ZZ tolerance band, which is standard practice for go-gage applications.

Key Features

• Nominal diameter of 0.067 inches for small-bore inspection work
• Class ZZ tolerance class suited for general go/no-go inspection
• Minus tolerance designation ground to the lower end of the tolerance band
• Steel construction for durability and dimensional stability
• 0.0002-inch tolerance for reliable close-tolerance verification

Compatibility

Designed for use with standard pin gage handle sets and holders that accept pins in the sub-0.1-inch diameter range. Specific compatible handle sets or gage blocks were not identified in the product data.

Installation Notes

Pin gages should be handled with clean, dry hands or cotton gloves to prevent dimensional error from thermal expansion or corrosion. Verify that the hole to be checked is free of burrs, chips, and coolant before inserting the pin. Store pins in a protective case when not in use to prevent surface damage that could affect accuracy. Calibration and use should follow applicable ASME B89 or equivalent dimensional inspection standards.