Spi 29-736-6 Class Zz Plus Plug Gage 0.736 Inch

Product Description

The SPI 29-736-6 is a Class ZZ Plus plug gage designed for go/no-go dimensional inspection of bored holes, drilled passages, and machined openings measuring 0.736 inches in diameter. Built from steel, this gage delivers a tolerance of 0.0002 inches, meeting Class ZZ Plus accuracy standards for workshop-level inspection. Machinists, quality control technicians, and tool room professionals use plug gages like this to verify that a finished hole falls within the required size range before parts move to assembly. The compact form factor and low weight make it easy to handle during repetitive inspection cycles.

This plug gage is suited for use in machine shops, production environments, and tool rooms where hole diameter verification is required. It is appropriate for inspecting steel, aluminum, plastic, and other workpiece materials. Typical applications include checking drilled, reamed, or bored holes in manufacturing and fabrication workflows. The 0.736-inch nominal diameter targets a specific size class commonly encountered in precision mechanical assemblies.

Key Features

• Class ZZ Plus tolerance rating at 0.0002 inches for workshop-grade inspection accuracy
• Nominal measurement diameter of 0.736 inches
• Steel construction for durability and dimensional stability
• Compact and lightweight at 0.2 pounds for easy single-hand use
• Single-piece packaging suitable for individual replacement or kit supplementation

Compatibility

Designed as an OEM-style replacement or direct addition for standard plug gage sets used in go/no-go hole inspection applications requiring a 0.736-inch diameter Class ZZ Plus gage.

Installation Notes

Plug gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Before use, verify the gage and workpiece are at a stable temperature, as thermal expansion can affect readings at tight tolerances. Store the gage in its protective case when not in use to prevent surface damage. Periodic cleaning and light oiling with a precision instrument oil will extend gage service life.