Spi 29-595-6 Class Zz Plus Plug Gage 0.595 in

Product Description

The SPI 29-595-6 is a Class ZZ Plus plug gage designed for go/no-go dimensional inspection of hole diameters. It measures a nominal diameter of 0.595 inches with a tolerance of 0.0002 inches, making it suitable for precision quality-control work in machining and manufacturing environments. Constructed from steel, this plug gage delivers the rigidity and wear resistance required for repeated use on the shop floor. Machinists, quality technicians, and toolroom personnel use this type of gage to verify that drilled, reamed, or bored holes fall within specified limits.

Class ZZ Plus plug gages are typically applied in production inspection settings where moderate-precision hole verification is required. The 0.595-inch diameter range targets common bore sizes found in general machining, fixture work, and component assembly. This gage is appropriate for both in-process checks and final inspection on steel, aluminum, and similar workpiece materials. Its compact form factor allows use on a bench or directly at the machine during production runs.

Key Features

• Class ZZ Plus tolerance grade for production-level dimensional inspection
• Nominal measurement diameter of 0.595 inches
• Tolerance of 0.0002 inches for consistent, repeatable verification
• Steel construction for durability and resistance to wear
• Compact and lightweight at 0.2 pounds for easy handling at the bench or machine

Compatibility

Designed as a standard Class ZZ Plus plug gage for general-purpose hole inspection applications requiring a 0.595-inch nominal diameter measurement.

Installation Notes

Plug gages are handled and used by machinists and quality technicians and do not require power or permanent installation. Clean the gage and workpiece bore before use to prevent debris from affecting measurement accuracy. Store the gage in its case or on a protected surface to avoid nicks and corrosion that could affect tolerance integrity. Calibration intervals should follow your facility quality management procedures and applicable metrology standards.