Spi 29-001-5 Class Zz Plus Plug Gage 1 Inch

Product Description

The SPI 29-001-5 is a Class ZZ Plus plug gage designed to verify the inside diameter of bores and holes with a nominal measurement of 1.0000 inches. Built from steel, this go/no-go style gage delivers a tolerance of 0.0002 inches, making it a reliable tool for dimensional inspection in machine shops, manufacturing facilities, and maintenance environments. It is used by machinists, quality control inspectors, and tool-and-die professionals who require consistent, repeatable results when checking hole size conformance to engineering specifications.

This plug gage is suited for inspection applications where precise bore measurement is required on machined parts, fixtures, and assemblies. The 1.0000-inch diameter range targets common bore sizes found in general manufacturing and precision machining environments. The Class ZZ Plus designation indicates it meets standard gage tolerance classifications used in production and inspection settings where close-tolerance verification is necessary.

Key Features

• Nominal measurement diameter of 1.0000 inches for bore inspection
• Tolerance of 0.0002 inches for precise dimensional verification
• Steel construction for durability and dimensional stability
• Class ZZ Plus classification meets standard production inspection requirements
• Compact and lightweight at 0.2 pounds for handheld use

Compatibility

Designed as a standard OEM-style plug gage for use in general production inspection and quality control applications requiring 1.0000-inch bore verification.

Installation Notes

Plug gages are handled and used by machinists and quality control inspectors following standard metrology practices. Store the gage in a clean, dry environment and allow it to reach ambient temperature before use to prevent thermal expansion errors. Handle with clean gloves or a lint-free cloth to avoid corrosion from skin contact. Do not force the gage into a bore; apply only light, even hand pressure consistent with standard gage practice.