Spi 19-888-7 Class Zz Minus Plug Pin Gage 0.888 in

Product Description

The SPI 19-888-7 is a Class ZZ minus plug pin gage machined to a 0.888-inch nominal diameter with a tolerance of 0.0002 inches. Plug pin gages are precision measurement tools used to verify bore and hole dimensions during inspection, quality control, and manufacturing processes. The minus designation means the gage is ground to the low side of tolerance, making it suitable for go/no-go gauging applications where strict dimensional conformance is required. Constructed from steel, this gage delivers the hardness and dimensional stability needed for repeated use in production and inspection environments. Machinists, quality technicians, and toolroom professionals are the primary users.

This gage is suited for applications requiring precise hole and bore verification in manufacturing, fabrication, and inspection settings. It is used in both production-floor and laboratory environments where dimensional accuracy to ten-thousandths of an inch must be confirmed. The 0.888-inch diameter fits inspection protocols for medium-bore components across a range of industries. Single-unit packaging makes it practical for individual gage kit builds or standalone replacement of a worn or out-of-tolerance gage in an existing set.

Key Features

• Class ZZ tolerance class suitable for general-purpose go/no-go gauging inspection
• Minus designation ground to the low side of tolerance for accurate limit checking
• 0.0002-inch tolerance for reliable dimensional verification
• Steel construction provides hardness and wear resistance for repeated use
• 0.888-inch nominal diameter for medium-bore inspection applications

Compatibility

Designed as an OEM-style replacement or standalone addition compatible with standard Class ZZ plug gage handle sets and gage block inspection systems requiring a 0.888-inch diameter pin.

Installation Notes

Plug pin gages are handled and used by quality control technicians and machinists and require no power source or special tools for operation. Store the gage in a protective case away from moisture and contaminants to prevent corrosion and dimensional changes. Clean the gage and the bore being measured before use to ensure accurate readings. Calibrate or verify the gage against a traceable standard at regular intervals per your quality management system requirements.