Spi 19-929-9 Class Zz Minus Plug Pin Gage 0.929 in

Product Description

The SPI 19-929-9 is a Class ZZ minus plug pin gage machined to a 0.929-inch nominal diameter with a tolerance of 0.0002 inches. Plug pin gages are precision inspection tools used to verify that a drilled, reamed, or bored hole meets dimensional specifications. The minus designation means the gage is manufactured to the lower end of the tolerance range, making it suitable for go/no-go gauging applications where undersized verification is required. The steel construction provides durability and dimensional stability for repeated use in shop-floor and inspection environments. Machinists, quality control technicians, and tool-and-die professionals rely on this type of gage for fast, reliable hole inspection.

This gage is used in manufacturing and fabrication environments where precise hole size verification is essential. Typical applications include checking drilled and reamed holes in metal parts, fixture verification, and incoming inspection of machined components. It is suited to both production floor use and quality lab environments. The compact, single-piece design allows quick insertion and withdrawal during high-volume inspection workflows.

Key Features

• Class ZZ tolerance class, appropriate for general-purpose hole inspection
• Minus designation ensures gage falls at the lower boundary of the tolerance range
• 0.0002-inch tolerance for reliable dimensional verification
• Steel construction for durability and long service life
• 0.929-inch nominal diameter for consistent go/no-go gauging

Compatibility

Designed as a standard Class ZZ minus plug pin gage for general-purpose hole inspection in machining and fabrication applications.

Installation Notes

Plug pin gages should be handled and stored carefully to prevent nicks, burrs, or surface contamination that could affect measurement accuracy. Clean both the gage and the part being inspected before use. Apply light machine oil to the gage surface to reduce wear and prevent corrosion during regular use. Gages should be periodically recalibrated or compared to a reference standard to confirm continued accuracy.