Spi 19-087-6 Class Zz Minus Plug Pin Gage 0.087 in

Product Description

The SPI 19-087-6 is a Class ZZ minus plug pin gage used to check hole diameters and bore sizes in precision machining and quality inspection environments. The gage measures 0.087 inches in diameter with a tolerance of 0.0002 inches, conforming to Class ZZ minus specifications for go/no-go tolerance verification. Constructed from steel, this pin gage is suited for production floor inspection, machine shop work, and dimensional verification tasks where accurate measurement of small bores is required. Machinists, quality technicians, and toolroom personnel use this type of gage as part of standard inspection routines.

This pin gage is used in applications requiring precise bore or hole diameter verification at the 0.087-inch nominal size. It is appropriate for inspection of drilled, reamed, or punched holes in metal, plastic, and composite components. Class ZZ gages are typically used in production-level inspection where tighter Class Z or ZZ tolerances are required by part drawings or quality plans. The minus designation means the gage is ground to the lower limit of the nominal size, making it standard for go-gage applications in production inspection.

Key Features

• Class ZZ minus specification for production-level go-gage inspection
• 0.087-inch nominal diameter for small bore and hole verification
• Tolerance of 0.0002 inches for precise dimensional control
• Steel construction for durability in shop and inspection environments
• Single-piece packaging suitable for individual replacement or kit supplementation

Compatibility

Designed as a standard Class ZZ minus plug pin gage for use with pin gage sets, gage blocks, and go/no-go inspection fixtures requiring a 0.087-inch nominal diameter pin.

Installation Notes

Pin gages are handled and used by machinists and quality inspection technicians without special tooling, but care should be taken to avoid dropping or contacting the gage surface against hard objects, as this can affect accuracy. Clean the gage and the bore being checked before use to remove chips, oil, or debris that would affect measurement. Store in a protective case or sleeve when not in use to prevent surface damage and corrosion. Periodic calibration against traceable standards is recommended to verify dimensional integrity.