Spi 29-205-2 Class Zz Plus Plug Gage 0.205 in Dia

Product Description

The SPI 29-205-2 is a Class ZZ Plus plug gage designed to verify bore and hole diameters to a nominal size of 0.205 inches with a tolerance of 0.0002 inches. Machined from steel, this go/no-go style precision instrument gives machinists, quality technicians, and tool-and-die professionals a fast, reliable method for checking inside diameter conformance on production and inspection work. Class ZZ Plus gages meet recognized tolerance standards for fixed-limit plug gages, making them appropriate for general-purpose inspection in shop and lab environments where consistent measurement confidence is required.

This plug gage is suited for small-bore inspection work in manufacturing, machining, and fabrication settings. It is commonly used to verify drilled, reamed, or bored holes in metal components where tight dimensional control is critical. The 0.205-inch nominal diameter targets precision small-hole applications. Quality control personnel and CNC machinists reach for this class of gage when go/no-go attribute inspection is faster and more practical than using a bore micrometer or air gage.

Key Features

• Class ZZ Plus tolerance rating for general-purpose fixed-limit plug gage inspection
• 0.205-inch nominal measurement diameter for small-bore applications
• 0.0002-inch tolerance for reliable attribute inspection conformance
• Steel construction for durability in shop and production environments
• Compact single-piece format for fast go/no-go checks

Compatibility

Designed as an OEM-style fixed-limit plug gage for general-purpose bore inspection of holes with a nominal diameter of 0.205 inches in production, quality control, and machine shop applications.

Installation Notes

Plug gages are handled and used by quality technicians, machinists, and inspection personnel — no special installation is required. Store the gage clean and lightly oiled to prevent corrosion and protect the ground surface. Do not force the gage through a hole; excessive insertion force will accelerate wear and compromise measurement accuracy. Calibrate or verify the gage against a traceable master reference at intervals consistent with your quality management system requirements.