Spi 29-876-0 Class Zz Plus Plug Gage 0.876 in Dia

Product Description

The SPI 29-876-0 is a Class ZZ Plus plug gage used to verify bore and hole diameters to a precise 0.876 inches. It holds a tolerance of 0.0002 inches, making it suitable for dimensional inspection work where accurate go/no-go measurement is required. Constructed from steel, this gage is built to withstand repeated use in shop and field inspection environments. Machinists, quality control technicians, and tool and die professionals use plug gages like this one to confirm that drilled, reamed, or bored features meet print specifications before parts move to the next stage of production.

This plug gage is applied wherever a 0.876-inch nominal bore must be verified against a dimensional tolerance. Typical use cases include incoming inspection, in-process quality checks on machined components, and final acceptance gaging in job shops, manufacturing facilities, and maintenance repair operations. Class ZZ Plus designation indicates the gage meets standards appropriate for general-purpose production inspection rather than master or reference-grade applications.

Key Features

• 0.876 inches nominal diameter for direct bore verification
• 0.0002 inches tolerance for precise dimensional inspection
• Steel construction for durability in production environments
• Class ZZ Plus rating suitable for general-purpose inspection use
• Compact form factor at 0.2 pounds for easy handling

Compatibility

Designed as a general-purpose plug gage for verifying 0.876-inch nominal diameter bores in machined parts and assemblies across standard production inspection applications.

Installation Notes

Plug gages are handled and applied by machinists or quality control inspectors following standard metrology practices. Clean the gage and the bore being checked before use to prevent debris from affecting the measurement. Store the gage in its case when not in use to protect the precision-ground surface from damage. Never force a plug gage into a bore, as this can cause damage to both the gage and the workpiece.