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The Black Guard™ Class ZZ No-Go pin gauge is a precision tool designed for accurate hole size measurement. Constructed from durable tool steel, this pin features a specialized surface treatment that penetrates 0.000040 in. to 0.000060 in. deep, providing a visible indicator of wear patterns to facilitate effective calibration and replacement. It is engineered to deliver reliable performance in various metalworking and inspection environments.
Provides a tolerance of 0.0002 in.
Includes a certificate of accuracy with NIST traceability
Surface finish of 10 microinch or better
Hardness rating of 60 to 65 Rc
Visible wear indication helps prevent rust and corrosion
Cylindrical shape with 2 in. length
Marked with size and direction of tolerance for diameters over 0.0605 in.
Encompass Procurement Services Non-distribution item offered as a customer accommodation; additional freight charges may apply. Learn More