Spi 29-149-2 Class Zz Plus Plug Gage 0.149 in

Product Description

The SPI 29-149-2 is a Class ZZ Plus plug gage used to verify the diameter of precision bores and holes during inspection and quality control operations. The gage measures a nominal diameter of 0.149 inches with a tolerance of 0.0002 inches, making it suited for applications where tight dimensional accuracy must be confirmed. Constructed from steel, it provides the durability and wear resistance expected in production and inspection environments. Machinists, quality technicians, and toolroom professionals use plug gages like this to perform go/no-go style inspections or direct diameter verification on machined components.

This plug gage is appropriate for use in machine shops, manufacturing facilities, and metrology labs where hole diameter conformance must be verified to close tolerances. It is sized for small-diameter bore inspection at 0.149 inches and is well suited for checking drilled, reamed, or bored holes in metal components. The compact form factor allows use in confined inspection scenarios where larger gaging tools would not fit.

Key Features

• Class ZZ Plus tolerance class for reliable dimensional verification
• 0.149 inch nominal measurement diameter
• 0.0002 inch tolerance for precise bore inspection
• Steel construction for durability and wear resistance
• Compact design suited for small-bore applications

Compatibility

Designed as a standard plug gage for inspection of 0.149 inch nominal diameter bores and holes in machined metal parts. Suitable for use with standard gage handle holders compatible with this diameter range.

Installation Notes

Plug gages are handled and applied by quality technicians or machinists during inspection — not permanent installation. Before use, clean the gage and bore thoroughly to remove chips, coolant, or debris that could affect measurement accuracy. Apply light gage oil when appropriate to protect the gage surface and extend service life. Store the gage in a protective case away from temperature extremes to maintain calibration integrity.