Spi 29-800-0 Class Zz Plus Plug Gage 0.8 Inch

Product Description

The SPI 29-800-0 is a Class ZZ Plus plug gage designed for verifying bore and hole diameters to a precise tolerance. Built from steel, this go/no-go style inspection tool measures a nominal diameter of 0.8 inches with a tolerance of 0.0002 inches, making it suitable for quality control applications where tight dimensional accuracy is required. At 0.2 pounds, it is a compact, single-piece gage suited for use on the shop floor, inspection bench, or in the field by machinists, toolmakers, and quality technicians.

Class ZZ Plus plug gages are typically used in production and incoming inspection environments to verify that drilled, reamed, or bored holes fall within specified dimensional limits. This gage is appropriate for use on both ferrous and non-ferrous workpieces where a 0.8-inch nominal diameter must be confirmed. It is a standard tool in manufacturing, machining, and mechanical assembly settings where dimensional verification is part of the quality workflow.

Key Features

• Class ZZ Plus accuracy rating for reliable dimensional verification
• 0.8-inch nominal measurement diameter
• 0.0002-inch tolerance for precise hole acceptance or rejection
• Steel construction for durability and wear resistance
• Compact and lightweight at 0.2 pounds for easy bench or floor use

Compatibility

Designed as a standard Class ZZ Plus plug gage for use in quality inspection applications requiring a 0.8-inch bore diameter check.

Installation Notes

Plug gages are handled and used by machinists, quality control inspectors, and toolmakers following standard metrology practices. Clean both the gage and the workpiece bore before use to avoid false readings caused by debris or burrs. Handle with care to avoid dropping, which can alter calibration or cause surface damage. Periodic recalibration against certified masters is recommended in accordance with applicable quality standards.