Spi 29-202-9 Class Zz Plus Plug Gage 0.202 in

Product Description

The SPI 29-202-9 is a Class ZZ Plus plug gage designed for precision inspection of small-diameter holes. It measures a nominal diameter of 0.202 inches with a tolerance of 0.0002 inches, making it suitable for go/no-go inspection work in tight-tolerance machining and manufacturing environments. The gage is constructed from steel for durability and dimensional stability. Machinists, quality control technicians, and tool-room professionals use plug gages like this one to verify that drilled, reamed, or bored holes fall within specified dimensional limits before parts advance to the next stage of production.

This plug gage is used in precision machining shops, manufacturing facilities, and quality inspection departments wherever hole-diameter verification is required. Class ZZ Plus gages are typically applied to inspection of production parts where moderate tolerance control is needed. The 0.202-inch nominal size suits a range of drilled or reamed hole applications common in metalworking and light industrial part production.

Key Features

• Nominal measurement diameter of 0.202 inches for precise small-bore inspection
• Tolerance of 0.0002 inches meets Class ZZ Plus gage accuracy requirements
• Steel construction provides wear resistance and dimensional stability
• Single-piece package suitable for individual workstation use
• Go/no-go style inspection tool eliminates reliance on measuring instruments for pass/fail checks

Compatibility

Designed as an OEM-style replacement or direct-use plug gage for go/no-go inspection setups requiring a 0.202-inch nominal diameter in Class ZZ Plus tolerance class.

Installation Notes

Plug gages are handled and applied by machinists or quality technicians — no permanent installation is required. Clean the gage and the hole being inspected before use to prevent debris from affecting measurement accuracy. Do not force the gage into a hole; excessive insertion force can damage the gage surface and produce false readings. Store the gage in a protected case away from other tools to prevent nicks or wear that would affect calibration.