Spi 29-151-8 Class Zz Plus Plug Gage 0.151 in

Product Description

The SPI 29-151-8 is a Class ZZ Plus plug gage designed for precision hole inspection in machining and manufacturing environments. It measures hole diameters at 0.151 inches with a tolerance of 0.0002 inches, making it suited for go/no-go verification of tight-tolerance bores. Constructed from steel for durability and dimensional stability, this gage is a standard tool for quality control technicians, machinists, and metrology professionals who need reliable, repeatable measurements on the shop floor or in the inspection room.

This plug gage is used in precision machining, tooling, and inspection applications where bore diameter verification is required. It is appropriate for both production-line spot checks and incoming inspection of machined components. The Class ZZ Plus designation indicates a specific tolerance grade suited for inspection of commercial-tolerance holes, making it a common choice in general manufacturing and job shop environments.

Key Features

• 0.151-inch measurement diameter for precise bore inspection
• 0.0002-inch tolerance for accurate go/no-go gauging
• Steel construction for wear resistance and dimensional stability
• Class ZZ Plus tolerance grade suited for commercial-tolerance hole inspection
• Compact single-piece design for handheld use at the machine or inspection station

Compatibility

Designed as an OEM-style replacement or direct-use plug gage for inspection of 0.151-inch nominal diameter bores in steel, aluminum, and similar machined components.

Installation Notes

Plug gages are used by machinists and quality control inspectors and require no permanent installation. Handle with clean, dry hands or lint-free gloves to prevent corrosion and maintain accuracy. Store in a protective case away from other tooling to avoid surface damage. Verify gage calibration against a master reference standard before use in critical inspection applications.