Spi 19-349-0 Class Zz Minus Plug Pin Gage 0.349 in

Product Description

The SPI 19-349-0 is a Class ZZ minus plug pin gage with a nominal diameter of 0.349 inches and a tolerance of 0.0002 inches. Pin gages in the Class ZZ minus designation are manufactured to a minus tolerance from nominal, making them well-suited for go/no-go dimensional inspection work in production and quality control environments. The gage is machined from steel for durability and dimensional stability under repeated use. Machinists, quality technicians, and tool-and-die professionals use these gages to verify bore diameters, hole sizes, and feature locations against drawing tolerances.

This plug pin gage is appropriate for use in machine shops, manufacturing facilities, and inspection departments where precise hole measurement is required. It is commonly used to check drilled, reamed, or punched holes in metal, plastic, and composite workpieces. The 0.349-inch diameter makes it suitable for inspecting holes in that specific size range on both prototype and production components.

Key Features

• Class ZZ minus tolerance designation for go/no-go inspection applications
• Nominal diameter of 0.349 inches with a tolerance of 0.0002 inches
• Steel construction for wear resistance and dimensional stability
• Compact and lightweight at 0.2 pounds for easy single-hand use
• Individual unit packaging with a minimum order quantity of 1

Compatibility

Designed as a standard plug pin gage for use in general-purpose dimensional inspection of 0.349-inch nominal diameter holes and bores.

Installation Notes

Pin gages are handled and used by quality technicians and machinists. 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; excessive insertion force can damage both the gage and the workpiece and will produce unreliable readings. Store in a protective case away from other metal tooling to prevent nicks or surface damage that could affect dimensional accuracy.