Spi 19-836-6 Class Zz Minus Plug Pin Gage 0.836 in

Product Description

The SPI 19-836-6 is a Class ZZ minus plug pin gage designed for go/no-go dimensional inspection of holes and bores. It checks whether a drilled, reamed, or machined hole meets a minimum diameter tolerance. The 0.836-inch nominal diameter gage is manufactured from steel and carries a minus tolerance of 0.0002 inches, conforming to Class ZZ specifications — the standard tolerance grade for general-purpose inspection gages used in production and quality control environments. Machinists, toolroom technicians, and quality inspection personnel use this gage to verify hole size quickly and consistently.

This plug gage is suited for use in machine shops, manufacturing facilities, and fabrication environments where hole tolerances must be confirmed before assembly. It applies to inspection of ferrous and non-ferrous workpieces where a 0.836-inch bore dimension is called out on a print. Class ZZ gages are commonly used for production-level inspection rather than master or reference-grade measurement, making this an appropriate choice for floor-level quality checks and incoming inspection work.

Key Features

• Class ZZ minus tolerance classification for general-purpose hole inspection
• 0.0002-inch tolerance provides consistent dimensional verification at the 0.836-inch nominal size
• Steel construction for durability in shop environments
• Compact single-gage format for straightforward go/no-go checks
• Nominal diameter of 0.836 inches suits common machined bore applications

Compatibility

Designed as a general-purpose Class ZZ minus plug pin gage for inspection of machined holes and bores with a 0.836-inch nominal diameter in standard production and quality control applications.

Installation Notes

Plug pin gages are handled and used by machinists or quality technicians — no power source or lockout is required. Clean the gage and the bore being inspected before use to prevent debris from affecting readings or scoring the gage surface. Do not force the gage into a hole; excessive insertion force can damage both the gage and the workpiece. Store the gage in a protective case away from moisture to maintain calibration and prevent corrosion.