Spi 29-716-8 Class Zz Plus Plug Gage 0.716 in

Product Description

The SPI 29-716-8 is a Class ZZ Plus plug gage designed for go/no-go dimensional inspection of bored holes, machined openings, and other internal features requiring precise tolerance verification. Built from steel, this gage checks a nominal diameter of 0.716 inches with a tolerance of 0.0002 inches, making it suitable for quality control applications where tight dimensional conformance is required. At 0.2 pounds, it is a compact, hand-held tool used by machinists, tool-and-die technicians, QC inspectors, and maintenance personnel working in manufacturing and fabrication environments.

This plug gage is used in shop floor and inspection room settings where internal bore diameters must be verified against a fixed nominal dimension. Class ZZ Plus gages are commonly applied in medium-tolerance production inspection, incoming material checks, and tooling verification. The 0.716-inch nominal size covers a range of drilled or reamed hole applications typical in mechanical and industrial component manufacturing.

Key Features

• Nominal measurement diameter of 0.716 inches for consistent go/no-go inspection
• Class ZZ Plus tolerance of 0.0002 inches for reliable dimensional verification
• Steel construction for durability and wear resistance in shop environments
• Lightweight at 0.2 pounds for comfortable single-hand operation
• Single-piece package quantity suits individual replacement or first-time tooling needs

Compatibility

Designed as a direct-fit Class ZZ Plus plug gage for applications requiring inspection of internal bores at a 0.716-inch nominal diameter. Suitable for use with standard gage handle sets compatible with this diameter range.

Installation Notes

Plug gages are installed and used by qualified machinists or QC inspectors and require no permanent mounting. Before use, clean the gage and the bore being inspected to remove chips, oil, and debris that could affect readings. Handle with care to avoid dropping or impact damage, which can alter the gage surface and compromise accuracy. Store in a protective case away from heat sources to maintain dimensional stability.