Spi 19-600-6 Class Zz Minus Plug Pin Gage 0.6 in Steel

Product Description

The SPI 19-600-6 is a Class ZZ minus plug pin gage designed to verify the minimum acceptable size of bored holes, drilled passages, and machined bores in precision manufacturing and inspection work. Built from steel, this go/no-go style gage is used to confirm that a hole has been produced at or above its minimum specified diameter of 0.6 inches. The minus designation indicates the gage is manufactured to the lower tolerance boundary, with a tolerance of 0.0002 inches. Machinists, toolroom technicians, and quality control inspectors use plug pin gages as a fast, reliable method of dimensional verification without requiring measurement instruments.

This gage is suited for incoming inspection, in-process quality checks, and final verification in shop environments handling precision machined components. It is appropriate for use in manufacturing facilities, machine shops, and toolrooms where hole diameter conformance to tight tolerances is required. The 0.6-inch diameter makes it applicable to a range of mid-size bore applications across general metalworking, aerospace component inspection, and industrial fabrication.

Key Features

• Class ZZ minus designation for verification of minimum hole diameter boundary
• 0.6-inch nominal diameter for mid-range bore inspection
• Steel construction for durability and dimensional stability
• Tolerance of 0.0002 inches for reliable precision inspection
• Compact and lightweight at 0.2 pounds for easy handling on the shop floor

Compatibility

Designed as a standard Class ZZ minus plug pin gage for use in general precision hole inspection applications where a 0.6-inch nominal diameter is specified.

Installation Notes

Plug pin gages are used by machinists and quality technicians and require no permanent installation. Clean the gage and the bore to be inspected before use to prevent debris from affecting the reading or damaging the gage surface. Do not force the gage into a hole; apply only light, steady hand pressure to avoid scratching the bore or introducing measurement error. Store the gage in a protective case away from temperature extremes to maintain dimensional accuracy.