Spi 29-806-7 Class Zz Plus Plug Gage 0.806 in Dia

Product Description

The SPI 29-806-7 is a Class ZZ Plus plug gage designed to verify bore and hole diameters to a nominal size of 0.806 inches. It holds a tolerance of 0.0002 inches, meeting the requirements of Class ZZ Plus accuracy standards. The gage is constructed from steel for dimensional stability under typical shop conditions. Machinists, quality control technicians, and tool room personnel use plug gages like this one to confirm that drilled, reamed, or bored features fall within specified limits before parts move to the next stage of production or assembly.

This plug gage is suited for use in machine shops, manufacturing facilities, and precision fabrication environments where hole diameter verification is a routine inspection step. It is appropriate for go/no-go style inspection workflows on production runs requiring consistent dimensional control at the 0.806-inch nominal diameter. The compact form factor and steel construction make it practical for both bench inspection and floor-level use.

Key Features

• Nominal diameter of 0.806 inches for direct bore verification
• Class ZZ Plus tolerance of 0.0002 inches for precise dimensional checking
• Steel construction provides durability and dimensional stability
• Single-piece package quantity supports individual tool procurement
• Compact and lightweight at 0.2 pounds for easy handling

Compatibility

Designed as a standard Class ZZ Plus plug gage for inspection of bored, drilled, or reamed holes with a nominal diameter of 0.806 inches in general machining and quality control applications.

Installation Notes

Plug gages are used by machinists and quality technicians and require no permanent installation. Before use, ensure the gage and workpiece are at a stable ambient temperature to prevent thermal expansion errors. Clean the gage and the bore being checked prior to measurement to avoid debris-related false readings. Handle steel gages with care to prevent nicks or surface damage that would affect measurement accuracy.