Spi 29-945-3 Class Zz Plus Plug Gage 0.945 in

Product Description

The SPI 29-945-3 is a Class ZZ Plus plug gage designed for precision bore measurement in machine shop and quality control environments. It measures internal diameters at a nominal size of 0.945 inches with a tolerance of 0.0002 inches, making it suitable for go/no-go inspection workflows where tight dimensional control is required. Constructed from steel, this gage provides the durability and dimensional stability expected in production and inspection applications. It is installed and used by machinists, quality technicians, and toolroom professionals.

This plug gage is used to verify the diameter of drilled, bored, or reamed holes in manufacturing and inspection settings. Class ZZ Plus gages are typically applied in less critical tolerance applications where a cost-effective, reliable inspection tool is needed. The 29-945-3 is suited for both shop-floor spot checks and more controlled inspection room use, wherever a 0.945-inch bore diameter must be confirmed to specification.

Key Features

• Nominal measurement diameter of 0.945 inches for precise bore inspection
• Class ZZ Plus tolerance rating of 0.0002 inches ensures reliable go/no-go gauging
• Steel construction provides durability and dimensional stability during repeated use
• Compact and lightweight at 0.2 pounds for easy handling during inspection tasks
• Single-piece package quantity for individual toolroom or inspection station use

Compatibility

Designed as a direct-fit Class ZZ Plus plug gage for inspecting internal bores with a nominal diameter of 0.945 inches in standard manufacturing and quality control applications.

Installation Notes

Plug gages are used by machinists and quality control technicians and require no permanent installation. Before use, ensure the gage and workpiece are at the same ambient temperature to avoid thermal expansion errors. Handle the gage carefully to prevent surface damage that could affect measurement accuracy. Store in a protective case when not in use to maintain calibration integrity.