Spi 29-076-7 Class Zz Plus Plug Gage 0.076 Inch

Product Description

The SPI 29-076-7 is a Class ZZ Plus plug gage used to verify hole diameter in precision machining and inspection applications. Manufactured from steel, this go/no-go style gage checks a nominal bore diameter of 0.076 inches with a tolerance of 0.0002 inches, making it suitable for close-tolerance inspection work. It is a standard single-end plug gage intended for use by machinists, quality control inspectors, and toolroom technicians who need a reliable, traceable means of verifying small-diameter bores to dimensional specifications.

This plug gage is suited for use in machine shops, tool and die environments, and quality inspection stations where small-diameter hole verification is required. Class ZZ Plus gages are commonly applied in production inspection of drilled, reamed, or bored holes where tight dimensional control is critical. The 0.076-inch diameter makes it appropriate for verifying small precision bores in metal components and assemblies.

Key Features

• Nominal measurement diameter of 0.076 inches for small-bore inspection
• Class ZZ Plus tolerance grade at 0.0002 inches for close-tolerance verification
• Steel construction for durability and dimensional stability
• Single-piece plug gage format for straightforward go/no-go inspection use
• Lightweight at 0.2 pounds for easy bench and in-process handling

Compatibility

Designed as an OEM-style replacement and standard-fit plug gage for use in any inspection setup requiring verification of a 0.076-inch nominal bore diameter to Class ZZ Plus tolerance standards.

Installation Notes

Plug gages are handled and used by machinists and quality inspection personnel, not field tradespeople. Clean the gage and the bore to be measured before use to avoid false readings caused by debris or cutting fluid. Do not force the gage into the bore, as this can damage the gage or the workpiece. Store the gage in a protective case away from other tooling to prevent surface damage that would affect accuracy.