Spi 29-062-7 Class Zz Plus Plug Gage 0.062 in

Product Description

The SPI 29-062-7 is a Class ZZ Plus plug gage designed for precision hole measurement in manufacturing and inspection environments. Built from steel, this fixed-limit gage checks whether a drilled, reamed, or bored hole falls within an acceptable dimensional range. The nominal measurement diameter is 0.062 inches, with a tolerance of 0.0002 inches, placing it in the tight-tolerance ZZ Plus classification suited for quality control and incoming inspection work. Machinists, toolmakers, and quality technicians use plug gages like this one to verify hole size quickly and reliably without relying on variable measuring instruments.

This gage is appropriate for use in machine shops, precision manufacturing facilities, and inspection departments where small-diameter hole verification is a routine part of the workflow. The 0.062-inch diameter makes it well suited for checking small drilled or reamed holes in metal, plastic, or composite workpieces. It is a single-ended fixed-limit gage intended for go or no-go inspection work at the bench or on the floor.

Key Features

• Nominal measurement diameter of 0.062 inches for small-hole inspection
• Class ZZ Plus tolerance of 0.0002 inches for reliable dimensional verification
• Steel construction for durability and dimensional stability under repeated use
• Compact and lightweight at 0.2 pounds for easy bench or floor use
• Fixed-limit design allows fast pass or fail hole checks without calculation

Compatibility

Designed as an OEM-style replacement or direct-use plug gage for any inspection application requiring a 0.062-inch diameter fixed-limit gage conforming to Class ZZ Plus tolerance standards.

Installation Notes

Plug gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Before use, clean the gage and the hole being checked with a lint-free cloth to remove chips, coolant, or debris that could affect the measurement. Apply light gaging oil when checking steel workpieces to reduce wear on the gage land. Store the gage in its protective case when not in use to maintain calibration and surface condition.