Spi 29-955-2 Class Zz Plus Plug Gage 0.955 in Dia

Product Description

The SPI 29-955-2 is a Class ZZ Plus plug gage designed for checking the inside diameter of bored or reamed holes to a nominal 0.955 inches. It provides a fast, reliable go/no-go check for production and inspection work, confirming whether a hole falls within acceptable dimensional limits. Built from steel, this gage holds a tolerance of 0.0002 inches, making it appropriate for moderate-precision inspection tasks. Machinists, quality technicians, and toolroom professionals use plug gages like this one as a daily part of dimensional verification on the shop floor or in the inspection lab.

This gage is suited for use in machine shops, production environments, and quality control stations where inside diameter verification at 0.955 inches is required. It fits into standard gage handle systems and is used during in-process checks, first-article inspection, and final quality verification of machined bores. It is appropriate for both high-volume production inspection and jobshop one-off verification work.

Key Features

• Nominal measurement diameter of 0.955 inches for precise bore checking
• Class ZZ Plus tolerance of 0.0002 inches for reliable dimensional verification
• Steel construction for durability and wear resistance in shop environments
• Compatible with standard plug gage handles for easy integration into existing gage setups
• Single-piece package quantity ready for immediate use out of the box

Compatibility

Designed as an OEM-style replacement or direct-use plug gage member for standard two-piece plug gage handle systems accepting 0.955-inch diameter gage members.

Installation Notes

Plug gages are installed and used by machinists, quality technicians, and inspection personnel. Before use, ensure the gage and workpiece bore are clean and free of chips or debris to prevent false readings and gage wear. Handle the gage carefully to avoid drops that could alter the ground surfaces and affect accuracy. Periodic calibration against a known standard is recommended to maintain measurement traceability.