Spi 29-782-0 Class Zz Plus Plug Gage 0.782 in Dia

Product Description

The SPI 29-782-0 is a Class ZZ Plus plug gage designed to verify bore and hole dimensions to a nominal diameter of 0.782 inches. It holds a tolerance of 0.0002 inches, making it suitable for go/no-go inspection work in production and quality-control environments. Machined from steel for durability and dimensional stability, this gage is a standard tool for machinists, toolmakers, and quality technicians who need reliable, repeatable measurement verification on the shop floor or in the inspection room.

This plug gage is used in manufacturing, machining, and fabrication settings where tight bore tolerances must be confirmed before part acceptance. Class ZZ Plus gages are commonly applied in medium-tolerance production inspection, where hole diameter conformance is checked against drawing specifications. The 0.782-inch diameter targets a specific nominal bore size found across a range of machined components and assemblies. Installation and use require no special tooling beyond proper gage handling technique and a clean, burr-free bore.

Key Features

• 0.782-inch nominal diameter for precise bore inspection
• Class ZZ Plus tolerance class at 0.0002 inches for reliable go/no-go verification
• Steel construction provides wear resistance and dimensional stability
• Compact and lightweight at 0.2 pounds for easy single-handed use
• Single-piece package quantity suits individual technician or small-shop use

Compatibility

Designed as an OEM-style replacement or standard inspection tool for applications requiring Class ZZ Plus plug gage coverage at a 0.782-inch nominal bore diameter.

Installation Notes

Plug gages should be handled and stored carefully to prevent surface damage that could affect accuracy. Before use, ensure the bore is clean and free of burrs, chips, or coolant residue. Apply light gage oil when checking ferrous bores to prevent corrosion on both the gage and the workpiece. Gage calibration and periodic recertification should follow your facility quality system requirements and applicable metrology standards.