Spi 19-841-6 Class Zz Minus Plug Pin Gage 0.841 in

Product Description

The SPI 19-841-6 is a Class ZZ minus plug pin gage used to verify hole diameters and internal bore dimensions during precision inspection work. With a nominal diameter of 0.841 inches and a minus tolerance of 0.000200 inches, this gage is suited for go/no-go inspection applications in production and quality control environments. The steel construction provides durability for repeated use in shop floor conditions. Machinists, toolmakers, and quality technicians use Class ZZ gages as a cost-effective solution for dimensional verification where tight tolerances must be confirmed quickly and reliably.

This pin gage is appropriate for use in manufacturing, machining, and inspection settings where hole size conformance is required. Class ZZ minus plug gages are commonly used to check drilled, reamed, or bored holes in metal, plastic, and composite workpieces. The 0.841-inch diameter makes it a practical choice for medium-bore inspection tasks in both job shop and production line environments. The compact, single-piece format allows for easy handling and storage in gage sets or individual gage blocks.

Key Features

• Class ZZ tolerance class — cost-effective standard for production inspection
• Minus plug configuration for go/no-go dimensional verification
• 0.841-inch nominal diameter for medium-bore applications
• 0.000200-inch tolerance for reliable, repeatable measurement
• Steel construction for durability under regular shop use
• Single-piece gage format for easy handling and storage

Compatibility

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

Installation Notes

Pin gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion and dimensional contamination. Before use, confirm the gage and workpiece are at the same ambient temperature to avoid thermal expansion errors. Clean the bore being inspected and the gage surface before each measurement. Store the gage in a protective case or holder when not in use to prevent damage to the precision surface.