Spi 29-336-5 Class Zz Plus Plug Gage 0.336 in Steel

Product Description

The SPI 29-336-5 is a Class ZZ Plus plug gage used to verify bore and hole diameters with precision in machining, manufacturing, and quality control environments. Sized at 0.336 inches in diameter, it holds a tolerance of 0.0002 inches, making it appropriate for applications where dimensional accuracy is critical. Constructed from steel for durability and wear resistance, this gage provides a reliable go/no-go reference for inside diameter inspection. It is used by machinists, toolmakers, and quality technicians as part of a standard measurement and inspection workflow.

This plug gage is suited for use in machine shops, production facilities, and inspection departments where hole diameter verification is required. It is typically applied to drilled, reamed, or bored holes during incoming inspection, in-process checks, or final quality audits. The 0.336-inch nominal size fills a common range in precision metalworking and light manufacturing applications.

Key Features

• 0.336-inch nominal diameter for precise inside diameter verification
• Class ZZ Plus tolerance class rated at 0.0002 inches for tight dimensional control
• Steel construction provides durability and resistance to wear under repeated use
• Compact, single-piece design suited for bench inspection and floor use
• Lightweight at 0.2 pounds for easy single-hand operation

Compatibility

Designed as an OEM-style precision gage for use in standard plug gage handles and holders that accept individual gage members in the 0.336-inch diameter range.

Installation Notes

Plug gages should be handled by qualified inspection or machining personnel following standard metrology practices. Clean the gage and the bore being measured before use to prevent debris from affecting readings. Store in a protective case away from tools and abrasive surfaces to preserve the gage surface and tolerance integrity. Do not force the gage into an undersized hole, as this can damage both the gage and the workpiece.