Spi 19-024-9 Class Zz Minus Plug Pin Gage 0.024 in

Product Description

The SPI 19-024-9 is a Class ZZ minus plug pin gage machined from steel and designed for precision bore and hole measurement in production and inspection environments. The gage measures 0.024 inches in diameter and holds a tolerance of 0.0002 inches, making it suitable for go/no-go verification of small-diameter features. Class ZZ is the standard tolerance class for working gages used in general manufacturing inspection. This gage is handled and deployed by quality technicians, machinists, and metrology personnel performing dimensional verification on machined or stamped components.

Plug pin gages in this diameter range are commonly used to verify hole size conformance on precision-machined parts, sheet metal stampings, and small-bore fittings. The 0.024-inch diameter is well suited for inspecting fine pilot holes, small fastener clearances, and similar features found in light manufacturing and precision assembly operations. The steel construction provides durability for repeated use in shop-floor and inspection-room environments.

Key Features

• Class ZZ tolerance class for working-gage inspection applications
• Minus designation indicates the gage is sized at the low end of the nominal diameter
• 0.0002-inch tolerance for reliable go/no-go measurement at 0.024 inches diameter
• Steel construction for wear resistance and dimensional stability
• Compact single-piece design for easy handling in tight inspection setups

Compatibility

Designed as a working plug pin gage for general inspection use in manufacturing and quality control settings where Class ZZ minus gages at 0.024 inches diameter are specified.

Installation Notes

Plug pin gages are used by quality control technicians and machinists and require no installation in the traditional sense. Clean both the gage and the workpiece bore before use to prevent false readings caused by debris or contamination. Store the gage in its protective case when not in use to avoid surface damage that could affect measurement accuracy. Handle with clean, dry hands or gloves to prevent corrosion from skin contact on the steel surface.