Spi 29-532-9 Class Zz Plus Plug Gage 0.532 in

Product Description

The SPI 29-532-9 is a Class ZZ Plus plug gage machined from steel and used to verify bore diameters with a nominal measurement of 0.532 inches. Class ZZ is the standard tolerance grade for general inspection of production parts, and the Plus designation indicates the gage is sized at the upper end of the tolerance band. With a tolerance of 0.0002 inches, this gage provides reliable go or no-go verification suited for shop-floor and quality-control applications. Machinists, tool-and-die makers, and QC inspectors use plug gages like this to confirm drilled, reamed, or bored holes meet dimensional print requirements before parts move to the next stage of production.

This plug gage is intended for use in machine shops, production environments, and inspection departments where bore diameter verification is part of standard quality assurance workflow. It is appropriate for both job-shop and high-volume production settings. The 0.532-inch nominal diameter targets a specific bore size common in general machined components. The steel construction handles repeated insertion cycles and resists wear under normal inspection use. Individual packaging at a quantity of one makes it straightforward to add a single gage to an existing set or replace a worn unit.

Key Features

• Class ZZ Plus tolerance grade for general-purpose bore inspection
• 0.532-inch nominal measurement diameter
• 0.0002-inch tolerance for consistent go or no-go verification
• Steel construction for durability through repeated use
• Single-unit packaging for individual replacement or set completion

Compatibility

Designed as a direct-fit Class ZZ Plus plug gage for inspecting 0.532-inch nominal bore diameters in standard machined components and assemblies.

Installation Notes

Plug gages are handled and used by machinists, quality technicians, and inspection personnel rather than installed in a system. Clean the gage and the bore before each use to prevent debris from affecting the measurement reading. Store the gage in its case or on a padded surface to protect the ground surface from nicks and wear. Do not force the gage into a bore, as improper insertion can damage the gage or distort the workpiece and produce a false reading.