Spi 22-181-2 Class Zz Plug Gage Set 200 Pc Nist Traceable

Product Description

The SPI 22-181-2 is a Class ZZ plug gage set covering a diameter range of 10 mm to 13.98 mm across 200 individual pin gages. Each pin is manufactured to a minus 0.005 mm tolerance, meeting Class ZZ standards for general-purpose inspection work. The set is NIST traceable and ships with a Certificate of Accuracy, making it suitable for quality control environments where documented traceability is required. A pin gage holder is included. Machinists, quality technicians, and toolroom professionals use sets like this to quickly verify hole sizes, slot widths, and center-to-center distances without the setup time of a bore gage or CMM.

This plug gage set is designed for shop floor and inspection room use in manufacturing, machining, and fabrication environments. The 200-piece range spanning 10 mm to 13.98 mm covers a broad band of common bore and slot sizes encountered in production machining. Typical applications include go and no-go inspection of drilled or reamed holes, slot width verification on milled components, and distance-between-hole calculations on jigs and fixtures. The included Certificate of Accuracy supports first-article inspection documentation and ISO-compliant quality processes.

Key Features

• 200-piece set covering 10 mm to 13.98 mm diameter range
• Class ZZ designation with minus 0.005 mm tolerance per pin
• NIST traceable Certificate of Accuracy included with each set
• Pin gage holder included for organized storage and retrieval
• Suitable for hole size measurement, slot width verification, and no-go gaging inspection
• UNSPSC Code 41111600 for procurement and catalog classification

Compatibility

Designed as a general-purpose Class ZZ plug gage set for use with standard pin gage holders and inspection fixtures accepting metric-range pins from 10 mm to 13.98 mm.

Installation Notes

Handle pin gages with clean, dry hands or lint-free gloves to prevent corrosion and dimensional error from thermal expansion. Store pins in the included holder when not in use to protect ground surfaces from nicks and contamination. Clean and lightly oil pins before storage per standard gage maintenance practice. Periodic recalibration against NIST traceable standards is recommended to maintain measurement integrity over time.