Spi 29-896-8 Class Zz Plus Plug Gage 0.896 in Dia

Product Description

The SPI 29-896-8 is a Class ZZ Plus plug gage used to verify bore and hole diameters to a precise tolerance of 0.0002 inches. It measures a nominal diameter of 0.896 inches and is manufactured from steel for dimensional stability and wear resistance. Class ZZ Plus gages are go/no-go inspection tools used by machinists, toolroom technicians, and quality control personnel to confirm that drilled, reamed, or bored holes fall within acceptable dimensional limits. This gage is a standard piece of precision metrology tooling found on production floors and in inspection departments.

This plug gage is suited for inspection work in manufacturing, machining, and toolroom environments where hole diameter verification is required. It is used during incoming inspection, in-process quality checks, and final inspection of machined components. The 0.896-inch diameter and tight 0.0002-inch tolerance make it appropriate for applications demanding close-tolerance hole qualification. Machinists and quality technicians handling steel, aluminum, and other machined materials will find this gage applicable to a broad range of production inspection tasks.

Key Features

• Class ZZ Plus tolerance rating for precise dimensional verification
• 0.896-inch nominal diameter measurement range
• 0.0002-inch tolerance for close-tolerance hole inspection
• Steel construction for durability and long service life
• Go/no-go inspection format supports fast pass-fail qualification

Compatibility

Designed as a standard Class ZZ Plus plug gage for use in general machining and inspection applications requiring 0.896-inch bore diameter verification.

Installation Notes

Plug gages should be handled with clean, dry hands or cotton gloves to prevent corrosion from skin contact. Before use, clean the gage and the bore being checked to remove chips, coolant, and debris that could affect measurement accuracy. Store the gage in its case away from temperature extremes to maintain dimensional stability. Calibration and use should follow applicable ASME B89 or equivalent gage standards.