Spi 29-885-1 Class Zz Plus Plug Gage 0.885 Inch

Product Description

The SPI 29-885-1 is a Class ZZ Plus plug gage designed to verify bore diameters with a nominal measurement diameter of 0.885 inches and a tolerance of 0.0002 inches. Plug gages of this class are used in precision inspection work to confirm that a machined hole or bore falls within acceptable dimensional limits. The steel construction provides durability and dimensional stability under repeated use. This gage is appropriate for quality control technicians, machinists, and metrology professionals working in production or maintenance environments where tight tolerances must be verified.

Class ZZ Plus plug gages are suited for inspection of production parts in machine shops, manufacturing facilities, and maintenance operations. They are commonly used to check bores in components such as housings, bushings, and precision-machined assemblies. The 0.885-inch diameter targets a specific bore size frequently encountered in standard mechanical work. This gage is intended for bench inspection or receiving inspection use rather than in-process gauging on cutting equipment.

Key Features

• Nominal measurement diameter of 0.885 inches for bore verification
• Class ZZ Plus tolerance of 0.0002 inches for precision inspection
• Steel construction for dimensional stability and long service life
• Single-piece design suited for bench inspection and receiving inspection
• Lightweight at 0.2 pounds for easy handling during inspection tasks

Compatibility

Designed as a go/no-go or single-end plug gage for inspecting bores with a nominal diameter of 0.885 inches in standard machined components.

Installation Notes

Plug gages are handled and used by quality control technicians and machinists. Prior to use, clean the gage and the bore being inspected to remove chips, coolant, and debris that could affect measurement accuracy. Do not force the gage into a bore; excessive force can damage both the gage and the workpiece. Store the gage in a protective case away from temperature extremes to maintain calibration stability.