Spi 29-341-5 Class Zz Plus Plug Gage 0.341 in Steel

Product Description

The SPI 29-341-5 is a Class ZZ Plus plug gage machined to a nominal diameter of 0.341 inches with a tolerance of 0.0002 inches. Plug gages of this type are used to verify whether a drilled, reamed, or bored hole falls within a specified dimensional tolerance. The Class ZZ designation indicates a working-grade gage suitable for production inspection rather than laboratory-grade master gaging. Constructed from steel, this gage provides the hardness and dimensional stability needed for repeated use in shop-floor environments. Machinists, quality control technicians, and tool-and-die professionals use this type of gage as part of standard go/no-go inspection routines.

The 29-341-5 is suited for production and incoming inspection applications where hole diameter verification is required. It is used in machine shops, manufacturing facilities, and assembly operations where hole tolerances must be confirmed before components advance through the production process. The 0.341-inch nominal size covers a common fractional and decimal hole size range frequently encountered in general machining and fabrication work.

Key Features

• Class ZZ Plus tolerance grade for working-level production inspection
• 0.341-inch nominal measurement diameter
• Tolerance of 0.0002 inches (0.0002 mm) for precise hole verification
• Steel construction for hardness and long service life on the shop floor
• Compact and lightweight at 0.2 pounds for easy handling during inspection

Compatibility

Designed as a working-grade plug gage for inspection of holes with a nominal diameter of 0.341 inches in standard production and quality control applications.

Installation Notes

Plug gages are inspection tools and do not require permanent installation. Before use, clean the gage and the hole being checked to remove chips, coolant, and debris that could cause false readings. Handle the gage carefully to avoid dropping or striking it against hard surfaces, as impact damage can alter the precision diameter. Periodic calibration against a master gage or certified reference standard is recommended to confirm the gage remains within tolerance over time.