Spi 29-147-6 Class Zz Plus Plug Gage 0.147 in

Product Description

The SPI 29-147-6 is a Class ZZ Plus plug gage used to verify bore and hole diameters to a high degree of accuracy in production and inspection environments. Designed for go/no-go gauging applications, it checks that a machined hole falls within the specified tolerance range. The 29-147-6 measures a nominal diameter of 0.147 inches with a tolerance of 0.0002 inches, making it suitable for close-tolerance work where dimensional conformance is critical. The gage body is constructed from steel for durability and dimensional stability under repeated use. Machinists, quality control technicians, and tool-and-die professionals use this type of gage as part of standard incoming and in-process inspection routines.

The SPI 29-147-6 is intended for use in machine shops, manufacturing facilities, and inspection departments that require reliable bore verification at small diameter ranges. It is well suited for checking drilled, reamed, or bored holes in metal and other rigid materials where tight tolerances are specified. This gage is appropriate for both production floor use and quality lab environments.

Key Features

• Nominal measurement diameter of 0.147 inches for small-bore inspection
• Class ZZ Plus tolerance of 0.0002 inches for high-accuracy gauging
• Steel construction provides durability and long service life under repeated use
• Compact form factor suited for handheld go/no-go inspection workflows
• Single-piece package quantity supports individual replacement or kit supplementation

Compatibility

Designed as an OEM-style inspection tool for use with standard plug gage handles and holders that accept small-diameter gage members in the 0.147 inch range.

Installation Notes

Plug gages are used by quality technicians and machinists and do not require power or mechanical installation. Gage members should be handled with care to avoid contact with abrasive surfaces that could alter the gauging diameter. Store the gage in a protective case when not in use to prevent wear and corrosion. Periodic calibration against certified reference standards is recommended to confirm dimensional accuracy over time.