Spi 29-535-2 Class Zz Plus Plug Gage 0.535 in

Product Description

The SPI 29-535-2 is a Class ZZ Plus plug gage designed to verify that a bored, drilled, or reamed hole meets a specific diameter tolerance. It measures holes at a nominal diameter of 0.535 inches with a tolerance of 0.0002 inches, making it suitable for go/no-go inspection work in production and maintenance environments. Machined from steel for durability and dimensional stability, this plug gage is a standard tool for quality control technicians, tool-and-die makers, and machinists who need reliable, repeatable hole inspection without the variability of calipers or bore gauges.

This plug gage is used in machine shops, manufacturing facilities, and maintenance departments wherever hole diameter verification is required. It is suited for inspecting holes in metal components, fixtures, and assemblies where tight dimensional control is necessary. The Class ZZ tolerance class is appropriate for general-purpose production inspection, making this gage a practical choice for incoming inspection, in-process quality checks, and final part verification.

Key Features

• Nominal measurement diameter of 0.535 inches for targeted hole inspection
• Tolerance of 0.0002 inches for precise go/no-go verification
• Class ZZ Plus designation meets standard general-purpose inspection requirements
• Steel construction provides dimensional stability and long service life
• Compact and lightweight at 0.2 pounds for easy handling at the workstation

Compatibility

Designed as a general-purpose Class ZZ plug gage for use in any production or maintenance inspection application requiring verification of a 0.535-inch nominal hole diameter.

Installation Notes

Plug gages are handled and used by quality control technicians and machinists and require no permanent installation. Before use, clean the gage and the hole being inspected to remove chips, coolant, and debris that could affect the reading. Store the gage in its protective case when not in use to prevent damage to the ground surfaces. Periodic recalibration against a certified master is recommended to maintain traceability.