Spi 19-063-7 Class Zz Minus Plug Pin Gage 0.063 in

Product Description

The SPI 19-063-7 is a Class ZZ minus plug pin gage used to verify hole diameters and internal bore dimensions in precision machining and inspection work. This gage measures a nominal diameter of 0.063 inches with a minus tolerance of 0.000200 inches, placing it in the Class ZZ category suited for general-purpose inspection of production parts. The steel construction provides durability and dimensional stability under repeated use. Machinists, quality control technicians, and tool and die professionals use plug gages like this one to confirm whether a drilled, reamed, or bored hole falls within an acceptable size range before a part moves to the next stage of production.

This pin gage is intended for use in manufacturing environments, machine shops, and inspection departments where hole size conformance is a routine requirement. It is appropriate for checking small-diameter holes in metal, plastic, or composite workpieces. The 0.063 inch diameter makes it well suited for inspecting holes produced by small drill bits or precision boring operations. It is typically used as part of a go/no-go inspection process or alongside a set of pin gages covering a range of diameters.

Key Features

• Nominal diameter of 0.063 inches for small-bore inspection
• Class ZZ minus tolerance of 0.000200 inches for general-purpose production inspection
• Steel construction for dimensional stability and wear resistance
• Compact single-pin format for easy handling and storage
• Compatible with standard pin gage handle sets for ergonomic use

Compatibility

Designed as a general-purpose Class ZZ minus plug pin gage for use with standard pin gage handles and holders accepting 0.063 inch diameter pin gages.

Installation Notes

Pin gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Store the gage in a protective case away from other metal tools to avoid nicks or surface damage that would affect measurement accuracy. Do not force the gage into a hole; insertion should require only light hand pressure. Calibrate and inspect the gage periodically against a certified reference standard to confirm it remains within tolerance.