Spi 29-204-5 Class Zz Plus Plug Gage 0.204 in Dia

Product Description

The SPI 29-204-5 is a Class ZZ Plus plug gage designed to verify the dimensional accuracy of bored, reamed, or drilled holes. It measures a nominal diameter of 0.204 inches with a tolerance of 0.0002 inches, making it appropriate for go/no-go inspection work where precise hole sizing is critical. Constructed from steel, this gage is used in machine shops, manufacturing facilities, and maintenance environments where hole-diameter verification is part of a standard quality-control or assembly process. Machinists, quality technicians, and precision measurement professionals are the primary users.

This plug gage is suited for applications requiring Class ZZ Plus accuracy, which is a standard classification for general-purpose inspection gages used in production and incoming inspection. It is appropriate for verifying holes in metal, plastic, or composite workpieces where the 0.204-inch nominal diameter is the target dimension. Its compact size and steel construction make it durable for repeated use in shop-floor conditions.

Key Features

• Class ZZ Plus tolerance classification for general-purpose hole inspection
• Nominal measurement diameter of 0.204 inches
• Tolerance of 0.0002 inches for precise go/no-go verification
• Steel construction for durability in production environments
• Compact form factor suited for repeated shop-floor use

Compatibility

Designed as a general-purpose plug gage for verifying holes with a nominal diameter of 0.204 inches in standard machining and inspection applications.

Installation Notes

Plug gages are handled and used by machinists and quality control technicians following standard metrology practices. Keep the gage clean and lightly oiled when not in use to prevent corrosion. Do not force the gage into a hole; controlled hand pressure is the correct insertion method. Store in a protective case away from temperature extremes to maintain calibration integrity.