Spi 19-767-3 Class Zz Minus Plug Pin Gage 0.767 in

Product Description

The SPI 19-767-3 is a Class ZZ minus plug pin gage designed for precision dimensional inspection of holes, bores, and internal diameters. Built to Class ZZ tolerance standards, this gage checks whether a feature falls within an acceptable size range. The 0.767-inch diameter steel construction delivers consistent, repeatable measurement performance in shop and inspection environments. With a minus designation, the gage is manufactured to the lower allowable tolerance limit, making it suitable for go/no-go inspection routines. Machinists, quality control technicians, and precision measurement professionals rely on this type of gage for verifying machined part conformance.

This pin gage is used in manufacturing, machining, and quality assurance applications where tight dimensional control is required. It is appropriate for inspecting drilled, reamed, or bored holes in metal, plastic, and composite workpieces. Class ZZ gages are commonly used for production-floor inspection rather than laboratory-grade calibration work. The 0.767-inch size fits inspection needs for medium-diameter bores in general industrial and precision manufacturing settings.

Key Features

• Class ZZ tolerance classification for production-level go/no-go inspection
• Minus designation — manufactured to the lower allowable tolerance limit
• 0.767-inch diameter for medium-bore dimensional inspection
• Steel construction for durability and dimensional stability
• Tolerance of 0.0002 inches for consistent, repeatable measurement

Compatibility

Designed as an OEM-style replacement or direct-use Class ZZ minus plug pin gage for standard 0.767-inch diameter bore inspection applications in general industrial and precision manufacturing environments.

Installation Notes

Pin gages should be handled by quality control technicians or machinists familiar with precision measurement practices. Clean the gage and the bore being inspected before use to remove chips, oil, and debris that could affect accuracy. Store the gage in a protective case away from temperature extremes to maintain dimensional integrity. Do not force the gage into an undersized bore, as this can damage both the gage and the workpiece surface.