Spi 29-534-5 Class Zz Plus Plug Gage 0.534 in Dia

Product Description

The SPI 29-534-5 is a Class ZZ Plus plug gage designed for go/no-go dimensional inspection of bored or reamed holes. It measures a nominal diameter of 0.534 inches with a tolerance of 0.0002 inches, making it suitable for quality-control checks on production floors, job shops, and inspection departments. The gage is constructed from steel for durability and dimensional stability during repeated use. Machinists, toolmakers, and quality technicians use plug gages like this to verify that a hole falls within its specified tolerance range without relying on calipers or micrometers for final acceptance.

This plug gage is used wherever a 0.534-inch hole diameter must be verified to tight tolerance. Typical applications include incoming inspection of machined components, in-process quality checks on CNC-machined parts, and final inspection before assembly. It is suited for both low-volume job shop work and higher-volume production inspection routines in manufacturing environments.

Key Features

• Nominal measurement diameter of 0.534 inches for precise hole inspection
• Tolerance of 0.0002 inches per Class ZZ Plus specification
• Steel construction for wear resistance and dimensional stability
• Compact and lightweight at 0.2 pounds for easy handling at the inspection station
• Single-unit packaging suitable for individual workstation or toolbox use

Compatibility

Designed as an OEM-style replacement or direct-use plug gage for go/no-go inspection of holes with a nominal 0.534-inch diameter in standard machining and quality-control applications.

Installation Notes

Plug gages are handled by quality technicians and machinists and require no power tools or fasteners for use. Store the gage in a protective case or pouch when not in use to prevent surface damage. Clean the gage and the hole being measured before inspection to avoid false readings caused by chips or coolant residue. Handle with care to avoid dropping, as impact can alter the gage diameter and invalidate its calibration.