Spi 19-367-2 Class Zz Minus Plug Pin Gage 0.367 in

Product Description

The SPI 19-367-2 is a Class ZZ minus plug pin gage machined from steel, designed to verify hole diameters to a nominal size of 0.367 inches. Class ZZ is the standard tolerance grade for production-floor go/no-go inspection work, and the minus designation means the gage is ground to the lower boundary of the tolerance band. With a tolerance of 0.0002 inches, this gage delivers the dimensional consistency required for quality control checks in manufacturing, machining, and precision assembly environments. Metrologists, machinists, and quality technicians use plug pin gages as a fast, reliable method to confirm bore dimensions without the need for a measuring instrument readout.

This gage is suited for production inspection applications where a 0.367-inch nominal bore diameter must be verified against a go or no-go condition. It is appropriate for use in machine shops, fabrication facilities, and quality labs performing in-process or final inspection on drilled, reamed, or bored holes. The steel construction holds up to repeated insertion cycles in typical shop environments. The compact form factor makes it easy to handle and store in a gage stand or case alongside other pin gages in a set.

Key Features

• Class ZZ tolerance grade suitable for production-floor go/no-go inspection
• Minus designation ground to the lower tolerance boundary for precise fit checking
• 0.0002-inch tolerance for consistent dimensional verification
• Steel construction for durability through repeated use
• 0.367-inch nominal diameter for direct bore size confirmation

Compatibility

Designed as an OEM-style replacement or direct addition to Class ZZ plug pin gage sets used for production inspection of 0.367-inch nominal bore diameters.

Installation Notes

Plug pin gages are handled and used by machinists, metrologists, and quality control technicians. Before use, ensure the gage and the workpiece bore are clean and free of chips, burrs, or coolant residue that could affect measurement accuracy or damage the gage surface. Insert the gage with light, consistent hand pressure and avoid forcing it into a bore, which can cause wear or scoring. Store pin gages in a protective case or stand to prevent surface damage between uses.