Spi 29-936-2 Class Zz Plus Plug Gage 0.936 in Steel

Product Description

The SPI 29-936-2 is a Class ZZ Plus plug gage machined from steel, designed for go/no-go inspection of bored holes, drilled passages, and precision-machined features with a nominal diameter of 0.936 inches. Class ZZ Plus gages are the most widely used fixed-limit gages in production inspection settings, offering a tolerance of 0.0002 inches that suits general-purpose acceptance testing where tight process control is required. Machinists, quality technicians, and toolroom personnel use plug gages like this one to verify hole size compliance quickly and repeatably without the setup time of a measuring instrument.

This gage is suited for incoming inspection, in-process quality checks, and final acceptance of machined parts in manufacturing and job-shop environments. It is appropriate for use on ferrous and non-ferrous workpieces wherever a 0.936-inch nominal hole dimension must be verified to print tolerances. The compact size and steel construction make it durable in light production use.

Key Features

• Class ZZ Plus tolerance class at 0.0002 inches for general-purpose production inspection
• Nominal measurement diameter of 0.936 inches
• Steel construction for durability and dimensional stability
• Fixed-limit design enables fast go/no-go inspection decisions
• Single-piece packaging suitable for individual replacement or bench use

Compatibility

Designed as an OEM-style fixed-limit plug gage for inspecting machined holes with a nominal diameter of 0.936 inches in general manufacturing and quality control applications.

Installation Notes

Plug gages are handled and used by quality technicians and machinists; no power source or mechanical installation is required. Store the gage in its protective case when not in use to prevent surface damage that could affect accuracy. Clean the gage and the hole being checked before use to remove chips, oils, or debris that could cause false readings. Calibrate or verify the gage against a traceable standard at intervals consistent with your shop's quality management procedures.