Spi 22-180-4 Class Zz Plug Gage Set 250 Pc 5-9.98mm

Product Description

The SPI 22-180-4 is a Class ZZ plug gage set covering a diameter range of 5.000 mm to 9.98 mm, with a minus 0.005 mm tolerance. The set contains 250 individual pin gages and is designed for fast, repeatable measurement of hole sizes, slot widths, and center-to-center distances between holes. It also supports NO-GO gaging inspection workflows. Each set ships with a Certificate of Accuracy that is NIST traceable, making it suitable for quality control environments where documented traceability is required. The set weighs 16.09 pounds and is packaged in a case measuring 17.72 inches long by 12.2 inches wide by 2.83 inches tall.

This plug gage set is used in machine shops, inspection departments, and manufacturing facilities where precise hole qualification is part of standard workflow. Machinists, quality technicians, and tool-and-die professionals reach for sets like this when verifying bores, checking fitment tolerances, and performing incoming or in-process inspection. The 250-piece range from 5 mm to 9.98 mm covers a broad span of small-to-medium hole sizes commonly encountered in precision metalworking and fabrication environments.

Key Features

• Class ZZ tolerance classification with minus 0.005 mm tolerance per pin
• 250-piece set spanning 5.000 mm to 9.98 mm diameter range
• Suitable for hole size measurement, slot width measurement, and NO-GO gaging inspection
• Includes Certificate of Accuracy with NIST traceable standards
• Includes pin gage holder
• Case dimensions: 17.72 inches long by 12.2 inches wide by 2.83 inches tall

Compatibility

Designed for use in precision measurement and inspection applications requiring Class ZZ plug gages in the 5 mm to 9.98 mm diameter range.

Installation Notes

Pin gages should be handled with clean, dry hands or lint-free gloves to prevent corrosion and measurement error from skin oils. Store pins in the provided case when not in use to protect precision-ground surfaces. Verify the appropriate pin size against your print tolerance before use, and never force a pin gage into a hole, as this can damage both the gage and the workpiece.