Spi 19-825-9 Class Zz Minus Plug Pin Gage 0.825 in

Product Description

The SPI 19-825-9 is a Class ZZ minus plug pin gage machined from steel and used to verify that a hole or bore meets its minimum acceptable size. The gage measures 0.825 inches in diameter and carries a tolerance of 0.0002 inches, conforming to Class ZZ minus specifications. A minus gage is ground to the low side of the nominal dimension, making it suitable for go/no-go inspection routines where the inspector needs to confirm a bore is within tolerance. Machinists, quality control technicians, and tool-room professionals use pin gages of this type as part of standard dimensional inspection on production or job-shop floors.

This pin gage is appropriate for shop-floor and inspection-room use wherever 0.825-inch bore verification is required. Typical applications include checking drilled, reamed, or bored holes in metal and plastic workpieces during in-process or final inspection. The steel construction holds up under repeated use in production environments. The single-pin format is suited to individual spot checks and can be incorporated into a larger gage pin set for broader dimensional coverage across a range of bore sizes.

Key Features

• Class ZZ minus tolerance ground to the low side of the nominal 0.825-inch dimension
• Tolerance of 0.0002 inches for consistent, repeatable bore inspection
• Steel construction for durability in production and tool-room environments
• Single-pin format allows targeted inspection of a specific bore size
• Lightweight at 0.2 pounds for easy handling during inspection routines

Compatibility

Designed as a direct-use Class ZZ minus plug pin gage for any application requiring dimensional verification of a 0.825-inch diameter bore or hole.

Installation Notes

Pin gages are handled and used by machinists and quality control technicians, not installed in the traditional sense. Before use, clean both the gage and the bore being inspected to remove chips, oil, and debris that could cause false readings or damage the gage surface. Apply only light, consistent hand pressure when inserting the pin gage into the bore. Store the gage in a protective case when not in use to prevent surface damage that would compromise dimensional accuracy.