Spi 22-186-1 Class Zz Plug Gage Set 75 Piece

Product Description

The SPI 22-186-1 is a Class ZZ plug gage set designed for precise hole measurement, slot width inspection, and distance-between-holes calculation in industrial metrology applications. The set covers a diameter range of 22.5 to 23.98 mm with a minus tolerance of 0.005 mm, meeting Class ZZ standards for inspection-grade accuracy. Weighing 33.73 pounds and spanning 75 individual pin gages, this set is built for quality control environments where consistent, repeatable measurements are required. Each set ships with a Certificate of Accuracy and a pin gage holder, supporting traceability requirements in calibrated inspection programs.

This plug gage set is suited for use in manufacturing inspection, machine shops, and quality assurance departments. It is used to verify hole sizes and slot widths in precision-machined components, and functions as a NO-GO gaging reference during inspection. The 75-piece count and broad diameter coverage make it appropriate for facilities that measure a wide range of bore sizes within the 22.5 to 23.98 mm window without switching gage sets. Industrial metrology technicians and quality control inspectors are the primary users.

Key Features

• Class ZZ tolerance rating with a minus tolerance of 0.005 mm for inspection-grade accuracy
• Covers diameter range from 22.5 to 23.98 mm across 75 individual pin gages
• NIST traceable Certificate of Accuracy included with each set
• Pin gage holder included for organized storage and access
• Suitable for hole sizing, slot width measurement, and NO-GO gaging inspection

Compatibility

Designed for use as a precision inspection tool in applications requiring hole, slot, or bore measurement within the 22.5 to 23.98 mm diameter range. Compatible with standard pin gage holders used in industrial metrology setups.

Installation Notes

This gage set is handled and used by metrology technicians or quality control inspectors in a controlled inspection environment. Store pins in the included holder to prevent damage to gage surfaces and maintain calibration integrity. Clean contact surfaces before each use to avoid measurement error from debris or oil buildup. Refer to the included Certificate of Accuracy and your facility's calibration program schedule for traceability and recertification intervals.