Spi 19-571-9 Class Zz Minus Plug Pin Gage 0.571 in

Product Description

The SPI 19-571-9 is a Class ZZ minus plug pin gage machined from steel and used to verify bore and hole diameters in precision inspection applications. At 0.571 inches in diameter, this pin gage holds a tolerance of 0.0002 inches, placing it in the Class ZZ range appropriate for general inspection and quality control work. Plug pin gages are go/no-go inspection tools used to confirm that a drilled, reamed, or bored hole falls within acceptable dimensional limits. Machinists, toolmakers, and quality control technicians use these gages as part of routine dimensional verification on production floors and in inspection rooms.

This pin gage is suited for dimensional inspection of machined components in manufacturing, fabrication, and toolroom environments. It is used where hole diameter verification is required to confirm conformance to engineering tolerances. The minus designation indicates the gage is ground to the low side of the nominal diameter, which is standard practice for go-gage applications. It is appropriate for use in both light production inspection and bench-level verification work.

Key Features

• Class ZZ tolerance classification for general-purpose inspection use
• Minus designation ground to the low side of nominal diameter for go-gage applications
• 0.0002 inches tolerance for reliable dimensional verification
• 0.571 inches nominal diameter
• Steel construction for durability in production and toolroom environments

Compatibility

Designed as a standard Class ZZ minus plug pin gage suitable for general inspection of bored, drilled, or reamed holes at 0.571 inches nominal diameter.

Installation Notes

Plug pin gages are handled and used by machinists and quality control technicians and require no permanent installation. Store pin gages in a protective case away from moisture to prevent corrosion and protect the ground surface. Clean the gage and the workpiece bore before use to ensure accurate measurement readings. Handle with care to avoid dropping, which can alter the ground diameter and compromise gage accuracy.