Spi 19-069-4 Class Zz Minus Plug Pin Gage 0.069 in

Product Description

The SPI 19-069-4 is a Class ZZ minus plug pin gage used to verify hole diameters in precision machining and quality control applications. Manufactured from steel, this pin gage measures a nominal diameter of 0.069 inches with a minus tolerance of 0.0002 inches, making it suitable for go/no-go inspection routines where tight dimensional verification is required. Machinists, tool-and-die makers, and quality inspectors use plug pin gages like this one to confirm bore size conformance to print specifications quickly and reliably.

This pin gage is intended for use in machine shops, manufacturing facilities, and inspection departments where small-diameter hole verification is part of standard workflow. It fits into hand-held pin gage handles or can be used directly in bench inspection setups. The Class ZZ designation indicates a commercially standard tolerance class appropriate for general-purpose inspection of production parts where laboratory-grade accuracy is not required.

Key Features

• Nominal diameter of 0.069 inches for small-bore inspection
• Class ZZ minus tolerance of 0.0002 inches for reliable go/no-go checking
• Steel construction for durability under regular shop use
• Compact single-pin format compatible with standard pin gage handles
• Consistent with ASME B89.1.5 Class ZZ gage standards for general inspection

Compatibility

Designed as a general-purpose plug pin gage for use with standard pin gage handles and holders accommodating 0.069-inch diameter pins. Compatible with typical go/no-go inspection fixtures used in production and quality control environments.

Installation Notes

Pin gages should be handled with clean cotton gloves or lint-free cloth to prevent corrosion from skin oils. Before use, inspect the pin for burrs or wear that could affect measurement accuracy. Store in the original case or a protected gage block tray when not in use to maintain surface integrity. Calibration intervals should follow your facility quality management system requirements.