Spi 29-606-1 Class Zz Plus Plug Gage 0.606 in

Product Description

The SPI 29-606-1 is a Class ZZ Plus plug gage used to verify the internal diameter of bores, holes, and machined features to a nominal size of 0.606 inches. It holds a tolerance of 0.0002 inches, placing it in the ZZ Plus accuracy class — suited for production go/no-go inspection work where consistent part conformance is required. The gage is constructed of steel for durability in shop environments. Machinists, quality technicians, and tool-and-die professionals use plug gages like this one to confirm that drilled, reamed, or bored holes fall within acceptable dimensional limits before assembly or further machining operations proceed.

This plug gage is appropriate for use in precision manufacturing, metal fabrication, and general machine shop inspection. It is well-suited to incoming inspection, in-process quality control, and final verification of hole dimensions in both production and job-shop settings. The 0.606-inch nominal diameter targets a specific bore size common in mechanical component manufacturing. It is a single-unit item packaged individually and is handled by quality control personnel, machinists, and inspection technicians working to dimensional print requirements.

Key Features

• Class ZZ Plus accuracy classification for production-grade go/no-go inspection
• Nominal measurement diameter of 0.606 inches
• Tolerance of 0.0002 inches for precise bore conformance checks
• Steel construction for wear resistance in shop environments
• Single-piece unit — no additional components required for use

Compatibility

Designed as a standard Class ZZ Plus plug gage for verifying 0.606-inch nominal bore diameters in machined components across general metalworking and precision manufacturing applications.

Installation Notes

Plug gages are installed and used by machinists and quality control technicians — no permanent mounting is required. Before use, clean the gage and the bore being checked to remove chips, coolant, and debris that could affect the reading. Do not force the gage into a bore; apply only light, consistent hand pressure to avoid damage to the gage or the workpiece. Store the gage in a protective case away from other tooling to prevent surface nicks that would compromise measurement accuracy.