Spi 29-881-0 Class Zz Plus Plug Gage 0.881 in Dia

Product Description

The SPI 29-881-0 is a Class ZZ Plus plug gage designed to verify bore and hole diameters to a nominal size of 0.881 inches. Built to Class ZZ Plus tolerance standards, this gage holds a tolerance of 0.0002 inches, making it suitable for go/no-go inspection work in production and quality control environments. The steel construction provides the durability and dimensional stability required for repeated use on the shop floor. Machinists, toolmakers, and quality technicians use this type of gage to confirm that drilled, reamed, or bored holes fall within specified dimensional limits.

This plug gage is used in manufacturing, machining, and inspection settings where hole diameter verification is required. It is well suited for incoming inspection, in-process quality checks, and final part verification on components requiring a 0.881-inch bore diameter. The compact form factor and single-piece design make it straightforward to handle in both bench and floor inspection scenarios.

Key Features

• Class ZZ Plus tolerance rating for precise go/no-go diameter inspection
• Nominal diameter of 0.881 inches for direct bore verification
• Tolerance of 0.0002 inches for high-accuracy measurement work
• Steel construction for dimensional stability and long service life
• Lightweight at 0.2 pounds for easy single-hand use

Compatibility

Designed as a standard Class ZZ Plus plug gage for use in any application requiring go/no-go inspection of a 0.881-inch nominal bore diameter.

Installation Notes

Plug gages are handled and used by machinists, toolmakers, and quality inspection personnel. Before use, clean the gage and the bore being checked to remove chips, coolant, or debris that could affect the reading. Handle with care to avoid dropping or contacting hard surfaces, as impact damage can alter the gage diameter and invalidate measurements. Store in a protective case away from temperature extremes to maintain dimensional accuracy.