Spi 19-165-0 Class Zz Minus Plug Pin Gage 0.165 in

Product Description

The SPI 19-165-0 is a Class ZZ minus plug pin gage machined from steel and designed to verify bore and hole diameters in precision inspection and quality-control applications. With a nominal diameter of 0.165 inches and a minus tolerance of 0.0002 inches, this gage is used to confirm that a hole falls within its lower acceptable limit. Class ZZ is the standard tolerance grade for general-purpose go/no-go inspection work in production and maintenance environments. Machinists, toolmakers, and quality technicians rely on this type of pin gage for fast, repeatable dimensional checks on drilled, reamed, or punched holes.

This pin gage is suited for use in manufacturing, machine shops, maintenance facilities, and inspection departments where small-diameter hole verification is required. It is commonly used as part of a go/no-go gage set or as a standalone check for holes near the 0.165-inch nominal size. The minus designation means the gage is ground below nominal, making it appropriate for checking the low side of a tolerance band.

Key Features

• Nominal diameter of 0.165 inches for small-bore inspection
• Class ZZ tolerance grade suited for general-purpose go/no-go checking
• Minus tolerance of 0.0002 inches for lower-limit verification
• Steel construction for durability and dimensional stability
• Compact, single-piece design for quick manual inspection

Compatibility

Designed as a general-purpose pin gage for any application requiring inspection of holes at or near 0.165 inches in diameter where Class ZZ tolerance standards apply.

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 its protective case when not in use to avoid contact damage or dimensional distortion. Before use, verify the gage is clean and free of debris that could affect the measurement reading. Periodic recalibration against a traceable standard is recommended to maintain inspection accuracy.