Spi 29-651-7 Class Zz Plus Plug Gage 0.651 in

Product Description

The SPI 29-651-7 is a Class ZZ Plus plug gage designed to verify that a bored, drilled, or reamed hole meets a specified diameter tolerance. It measures a nominal diameter of 0.651 inches with a tolerance of 0.0002 inches, making it a precision go/no-go inspection tool suited for shop-floor and inspection-room use. Constructed from steel, it delivers consistent, repeatable results in production environments. Machinists, quality control technicians, and tool-room professionals use plug gages like this one to confirm dimensional conformance before parts advance to the next stage of assembly.

This gage is appropriate for inspecting holes in metal components across general manufacturing, machining, and fabrication operations. It is a single-member plug gage used in applications where a 0.651-inch nominal hole diameter must be verified against a tight tolerance specification. Class ZZ Plus designation indicates it meets the accuracy standard defined for commercial-grade plug gages used in standard production inspection workflows.

Key Features

• Nominal measurement diameter of 0.651 inches for precise hole inspection
• Tolerance of 0.0002 inches ensures tight dimensional verification
• Steel construction for durability and wear resistance in production use
• Class ZZ Plus rating meets commercial plug gage accuracy standards
• Compact and lightweight at 0.2 pounds for easy handheld use

Compatibility

Designed as an OEM-style replacement or direct-use plug gage for any application requiring inspection of a 0.651-inch nominal diameter hole to Class ZZ Plus tolerance standards.

Installation Notes

Plug gages are handled and used by machinists and quality control inspectors - no power source or mechanical installation is required. Store the gage in a clean, dry environment away from contaminants that could affect the gage surface or introduce measurement error. Clean the gage and the hole to be inspected before use to prevent debris from affecting readings. Follow your facility's gage calibration schedule to maintain measurement traceability.