Spi 29-110-4 Class Zz Plus Plug Gage 0.11 in Diameter

Product Description

The SPI 29-110-4 is a Class ZZ Plus plug gage designed for precision hole and bore measurement in machining, manufacturing, and inspection environments. Built from steel, this go/no-go style gage checks whether a drilled or reamed hole falls within an acceptable tolerance range. It measures a nominal diameter of 0.11 inches with a tolerance of 0.0002 inches, making it suitable for quality control work where tight dimensional verification is required. Machinists, toolmakers, and QC inspectors rely on Class ZZ Plus gages for production-floor and inspection-bench applications where repeatable, traceable measurement is essential.

This plug gage is used in metalworking and precision manufacturing settings to verify hole diameter conformance during or after machining operations. It is well suited for inspection of drilled, reamed, or bored holes in production runs where maintaining tight tolerances is critical. The compact size and lightweight construction make it easy to handle at the bench or on the floor. Typical users include machinists, quality technicians, and manufacturing engineers working with close-tolerance components in job shop or production environments.

Key Features

• Class ZZ Plus accuracy rating for reliable production-floor dimensional inspection
• Nominal measurement diameter of 0.11 inches
• Tolerance of 0.0002 inches for tight dimensional verification
• Steel construction for durability and wear resistance during repeated use
• Lightweight at 0.2 pounds for easy bench and floor handling

Compatibility

Designed as a standard Class ZZ Plus plug gage for general-purpose hole and bore inspection in metalworking and precision manufacturing applications.

Installation Notes

Plug gages are handled and used by machinists and quality control technicians and do not require mechanical installation. Store the gage in its protective case when not in use to prevent damage to the precision-ground surfaces. Clean the gage and the hole being measured before use to ensure accurate readings. Avoid dropping or applying lateral force to the gage, as this can alter calibration and affect measurement accuracy.