Spi 29-211-0 Class Zz Plus Plug Gage 0.211 in

Product Description

The SPI 29-211-0 is a Class ZZ Plus plug gage used to verify the inside diameter of machined holes and bores to a high degree of precision. It measures at a nominal diameter of 0.211 inches with a tolerance of 0.0002 inches, making it suitable for go/no-go inspection work in production and maintenance environments. Constructed from steel for durability and dimensional stability, this plug gage is a standard tool in quality control workflows. Machinists, toolmakers, and precision measurement technicians rely on this type of gage for verifying bore compliance with tight dimensional specifications.

This gage is suited for use in machine shops, manufacturing facilities, and maintenance departments where hole diameter verification is part of standard inspection procedures. The Class ZZ Plus classification indicates this is a working gage intended for production-level inspection rather than calibration-lab reference use. Its compact size and simple operation make it practical for bench inspection or in-process checks on the shop floor.

Key Features

• Nominal measurement diameter of 0.211 inches for precise bore inspection
• Tolerance of 0.0002 inches meets Class ZZ Plus classification requirements
• Steel construction provides dimensional stability and wear resistance
• Suitable for go/no-go inspection applications in production environments
• Compact single-piece design for straightforward bench or in-process use

Compatibility

Designed as a working plug gage for inspecting machined holes and bores with a nominal inside diameter of 0.211 inches in standard production inspection applications.

Installation Notes

Plug gages are handled and used by machinists, toolmakers, and quality control technicians. Store the gage in a protective case away from moisture and extreme temperature changes to maintain dimensional accuracy. Clean the gage and the bore being inspected before use to prevent debris from causing false readings. Do not force the gage into a bore; if resistance is felt, the hole may be undersized or contain contamination.