Spi 19-696-4 Class Zz Minus Plug Pin Gage 0.696 in

Product Description

The SPI 19-696-4 is a Class ZZ minus plug pin gage designed for go/no-go dimensional inspection of bored holes, drilled passages, and machined features. It checks a nominal diameter of 0.696 inches with a minus tolerance of 0.0002 inches, confirming that a hole meets its minimum acceptable size. Manufactured from steel, it delivers the hardness and wear resistance required for repeated use in production and quality-control environments. Machinists, tool-room technicians, and metrology professionals use plug gages like this one as a fast, reliable alternative to inside micrometers for high-volume inspection work.

This gage suits inspection tasks in machine shops, manufacturing cells, and quality labs where hole diameter verification is part of routine process control. The Class ZZ designation indicates it is a working-class gage appropriate for production-floor use rather than laboratory master or reference applications. At 0.696 inches nominal, it fits into inspection programs for medium-bore components such as bushings, bearing bores, hydraulic valve bodies, and similar precision-machined parts.

Key Features

• Nominal diameter of 0.696 inches for direct hole-size verification
• Minus tolerance of 0.0002 inches confirming minimum acceptable hole size
• Class ZZ working-grade designation suited to production-floor inspection
• Steel construction for hardness, durability, and dimensional stability
• Single-piece packaging — ready to use as received

Compatibility

Designed as an OEM-style working plug gage for use in any standard go/no-go gage handle or holder accepting a 0.696-inch diameter pin member.

Installation Notes

Plug pin gages are typically handled by quality technicians or machinists and require no permanent installation. Clean and lightly oil the gage member before and after use to prevent corrosion and contamination of the gaging surface. Do not force the gage into a hole; if resistance is felt beyond normal tolerance, the feature is undersize and the gage should be withdrawn without twisting. Store in a protective case away from other metal tooling to prevent nicks or burrs that would compromise measurement accuracy.