Spi 29-384-5 Class Zz Plus Plug Gage 0.384 in

Product Description

The SPI 29-384-5 is a Class ZZ Plus plug gage used to verify bore and hole diameters with high-precision go/no-go inspection. It measures a nominal diameter of 0.384 inches and holds a tolerance of 0.0002 inches, placing it in the Class ZZ Plus accuracy grade suited for quality control and production floor inspection. Constructed from steel for durability and dimensional stability, this plug gage is a standard tool in dimensional inspection workflows used by machinists, toolmakers, and quality technicians.

This plug gage is used in manufacturing and machine shop environments where tight hole tolerances must be verified during or after machining operations. It is appropriate for inspecting drilled, reamed, or bored holes in both production and tool-and-die settings. The 0.384-inch diameter makes it suitable for checking close-tolerance bores in a range of metalworking and precision assembly applications.

Key Features

• Class ZZ Plus accuracy grade for precision go/no-go hole inspection
• Nominal measurement diameter of 0.384 inches
• Tolerance of 0.0002 inches for high-accuracy dimensional verification
• Steel construction for durability and long service life
• Compact and lightweight at 0.2 pounds for easy handling on the shop floor

Compatibility

Designed as a standard Class ZZ Plus plug gage for go/no-go inspection of 0.384-inch nominal diameter bores in general manufacturing and precision machining applications.

Installation Notes

Plug gages are used by machinists and quality inspection personnel and do not require installation in the traditional sense. Before use, clean both the gage and the bore being inspected to remove debris, coolant, or oils that could affect accuracy. Handle the gage carefully to avoid dropping or contact with abrasive surfaces, as damage to the gage surface will affect measurement integrity. Store in a protective case away from temperature extremes to maintain calibration.