Spi 19-450-6 Class Zz Minus Plug Pin Gage 0.45 in

Product Description

The SPI 19-450-6 is a Class ZZ minus plug pin gage used to verify hole diameters in machined, fabricated, or assembled components. It checks a nominal diameter of 0.45 inches with a minus tolerance of 0.0002 inches, confirming that a hole does not exceed the lower bound of the specified dimension. Steel construction provides the hardness and wear resistance required for repeated use in shop or inspection environments. Machinists, tool and die makers, and quality control technicians use plug gages as a fast, reliable go/no-go check without requiring a measuring instrument readout.

This gage is suited for production floor inspection, incoming material verification, and toolroom work where hole size conformance must be confirmed quickly. The 0.45 inch diameter range and Class ZZ designation make it appropriate for general-purpose inspection of drilled, reamed, or bored holes in metal or rigid plastic workpieces. It is a single-end minus member, intended for use as part of a go/no-go gage set or as a standalone minus check.

Key Features

• Nominal diameter of 0.45 inches for precise hole inspection
• Class ZZ tolerance grade at 0.0002 inches minus for general-purpose inspection
• Steel construction for hardness and durability under repeated use
• Compact, single-end design for fast go/no-go checks
• Package quantity of one gage per unit

Compatibility

Designed as an OEM-style replacement or direct-use plug pin gage for quality inspection applications requiring a Class ZZ minus member at 0.45 inch nominal diameter.

Installation Notes

Plug pin gages are handled and used by machinists or quality control inspectors and do not require installation in the traditional sense. Clean both the gage and the hole being checked before use to prevent debris from affecting the reading or damaging the gage surface. Store the gage in its case or on a rack to prevent contact with other tools that could cause nicks or wear. Handle with care to avoid dropping, as impact can alter the gage diameter and invalidate measurements.