Spi 29-265-6 Class Zz Plus Plug Gage 0.265 in Dia

Product Description

The SPI 29-265-6 is a Class ZZ Plus plug gage used to verify the inside diameter of precision holes and bores to a nominal measurement of 0.265 inches. It is manufactured from steel and holds a tolerance of 0.0002 inches, making it suitable for go/no-go inspection in production and quality-control environments. Machinists, toolmakers, and quality technicians use plug gages like this one to confirm whether a drilled, reamed, or bored hole falls within specified dimensional limits. The Class ZZ Plus designation indicates a commercial-grade tolerance classification appropriate for general inspection of non-critical and production-level work.

This plug gage is used in manufacturing, machine shops, and quality inspection departments where hole diameter verification is required. It is well-suited for checking clearance holes, threaded-hole pre-drill diameters, and any application where a 0.265-inch nominal bore dimension must be confirmed. It applies to both light-production and bench inspection work where repeatable, reliable gauging at a tight tolerance is needed.

Key Features

• 0.265-inch nominal diameter for direct hole measurement
• 0.0002-inch tolerance for precise dimensional verification
• Steel construction for durability and wear resistance
• Class ZZ Plus designation for commercial-grade go/no-go inspection
• Compact, single-unit form for bench or floor use

Compatibility

Designed as a standard plug gage for use in any application requiring go/no-go inspection of a 0.265-inch nominal inside diameter hole.

Installation Notes

Plug gages are handled by quality technicians and machinists and require no installation in the traditional sense. Before use, clean the gage and the bore to be checked to remove chips, coolant, and debris that could affect the reading. Do not force the gage into the hole; controlled hand pressure is the correct technique to avoid gage wear and false readings. Store the gage in its case when not in use to protect the precision ground surface.