Spi 19-616-2 Class Zz Minus Plug Pin Gage 0.616 in

Product Description

The SPI 19-616-2 is a Class ZZ minus plug pin gage used to verify bore and hole diameters in precision machining and inspection work. It measures 0.616 inches in diameter and is manufactured from steel for durability and dimensional stability. The minus tolerance designation means the gage is ground below nominal, making it suitable for go-gage applications where confirming minimum acceptable hole size is the objective. With a tolerance of 0.0002 inches, this gage meets Class ZZ standards appropriate for general-purpose inspection in shop-floor and quality-control environments. Machinists, tool-and-die makers, and quality technicians are the primary users.

This plug pin gage is used in manufacturing, fabrication, and inspection settings where hole diameter verification is required. It is appropriate for checking drilled, reamed, or bored holes in metal, plastic, or composite workpieces. Class ZZ gages are the standard choice for production-floor go/no-go inspection routines and are commonly used with gage blocks or gage-pin sets to establish reference measurements. The 19-616-2 is suited for both standalone use and as part of a larger pin gage assortment.

Key Features

• 0.616 inches nominal diameter for direct hole size verification
• Class ZZ minus tolerance ground to 0.0002 inches below nominal
• Steel construction for wear resistance and dimensional stability
• Suitable for go-gage applications in production inspection
• Compact and lightweight at 0.2 pounds for easy handling

Compatibility

Designed as a standard Class ZZ minus plug pin gage for use in general-purpose hole inspection applications requiring a 0.616-inch nominal diameter reference.

Installation Notes

Plug pin gages are handled and used by machinists and quality inspection personnel, not installed in the traditional sense. Keep the gage clean and lightly oiled when not in use to prevent corrosion and maintain accuracy. Do not force the gage into a hole; if resistance is felt, the bore is undersize. Store in a protective case away from temperature extremes to preserve calibration.