Spi 29-869-5 Class Zz Plus Plug Gage 0.869 in Dia

Product Description

The SPI 29-869-5 is a Class ZZ Plus plug gage used to verify the inside diameter of holes and bores to a measured nominal size of 0.869 inches. Built from steel, this go/no-go style gage is used in quality control and inspection workflows to confirm that a machined or drilled hole falls within acceptable tolerance. The 29-869-5 carries a tolerance of 0.0002 inches, making it suitable for precision inspection tasks in manufacturing, machining, and toolroom environments. Machinists, quality technicians, and tool-and-die professionals reach for plug gages like this one when verifying tight dimensional requirements on production or repair work.

This plug gage is designed for use in light industrial and precision machining inspection settings. It is applicable wherever a 0.869-inch nominal bore diameter must be confirmed to a close tolerance, including fixture verification, incoming inspection of machined parts, and process control checkpoints. The compact size and steel construction make it practical for both bench and floor use in a machine shop or toolroom environment.

Key Features

• 0.869-inch nominal measurement diameter for precise bore inspection
• Class ZZ Plus tolerance rating at 0.0002 inches for tight dimensional verification
• Steel construction for durability and resistance to wear during repeated use
• Compact and lightweight at 0.2 pounds for easy bench or floor handling
• Single-piece package quantity suits individual replacement or toolroom stocking

Compatibility

Designed as an OEM-style replacement or direct-use plug gage for any inspection application requiring a 0.869-inch nominal bore diameter check at Class ZZ Plus tolerance.

Installation Notes

Plug gages should be handled and stored carefully to prevent surface damage that could affect accuracy. Always clean the gage and the bore being measured before use to avoid false readings from contamination or debris. Calibration should be verified periodically against a traceable standard in accordance with applicable quality management procedures. No power tools or mechanical force should be applied when inserting the gage into a bore.