Spi 19-015-7 Class Zz Minus Plug Pin Gage 0.015 in

Product Description

The SPI 19-015-7 is a Class ZZ minus plug pin gage machined to a 0.015 inch nominal diameter with a tolerance of 0.0002 inches. Plug pin gages are precision go/no-go inspection tools used to verify bore diameters, hole sizes, and feature dimensions on machined components. This gage is manufactured from steel for durability and dimensional stability under repeated use. Class ZZ is the standard inspection-grade tolerance class, suitable for production floor and quality control applications. Machinists, quality technicians, and tool-and-die professionals use pin gages like this to confirm that drilled, reamed, or punched holes fall within specified tolerances.

This pin gage is suited for inspection of small-diameter holes and bores in metal, plastic, and composite workpieces. It is commonly used in manufacturing environments where tight dimensional control is required, including aerospace, automotive, and general precision machining shops. The minus designation indicates the gage is ground to the lower boundary of the nominal size, making it appropriate for go-gage applications where the hole must be at minimum the specified diameter before the gage passes through.

Key Features

• Class ZZ tolerance grade for standard production and quality inspection use
• Minus designation ground to the lower boundary of the 0.015 inch nominal diameter
• Tolerance of 0.0002 inches ensures precise dimensional verification
• Steel construction provides durability and resistance to wear under repeated use
• Compact single-pin format for easy handling and storage in a gage set

Compatibility

Designed as a standard Class ZZ minus plug pin gage for inspection of 0.015 inch nominal diameter holes and bores in general precision machining and quality control applications.

Installation Notes

Pin gages are handled and used by quality technicians and machinists — no installation is required. Before use, clean both the gage and the workpiece bore to remove chips, oil, or debris that could affect the measurement. Never force a pin gage into a hole; doing so can damage the gage or the workpiece and will produce unreliable results. Store pin gages in a protective case away from other tools to prevent nicks or corrosion that would compromise dimensional accuracy.