Spi 29-944-6 Class Zz Plus Plug Gage 0.944 in Dia

Product Description

The SPI 29-944-6 is a Class ZZ Plus plug gage machined for go/no-go inspection of internal bore diameters at 0.944 inches. Built to Class ZZ tolerances with a stated tolerance of 0.0002 inches, this gage provides a reliable, repeatable standard for checking hole size conformance on the shop floor or in a quality lab. The steel construction resists wear under regular production use. Machinists, toolmakers, and quality technicians use plug gages like this to verify that drilled, reamed, or bored holes fall within specified dimensional limits before parts advance to assembly.

This plug gage is suited for production inspection environments where internal diameter verification at 0.944 inches is required. Typical applications include checking through-holes and bored features in metal components across general machining, manufacturing, and fabrication operations. The compact form factor allows use in both bench inspection setups and inline production checks. A single gage per package makes it straightforward to stock as a replacement or add to an existing gage set.

Key Features

• Nominal measurement diameter of 0.944 inches for precise bore inspection
• Class ZZ Plus tolerance rating of 0.0002 inches ensures close conformance to dimensional standards
• Steel construction for durability and resistance to everyday shop wear
• Compact single-piece plug format for easy handling during inspection routines
• Packaged individually — one gage per unit

Compatibility

Designed as a standard Class ZZ Plus plug gage for use wherever internal bore diameters of 0.944 inches must be verified to tight tolerances in machining and manufacturing inspection applications.

Installation Notes

Plug gages are handled and used by machinists, toolmakers, and quality control technicians — no mechanical installation is required. Store the gage in a protective case away from moisture and abrasive surfaces to preserve accuracy. Clean bore and gage surfaces before inspection to avoid false readings from chips or debris. Calibrate and verify gage condition periodically in accordance with your facility quality system requirements.