The JBO Thread Ring Gauge (GO) – UNEF – Left Hand – 2A – 3/4 x 20 is a purpose-built tool for fast, accurate verification of external threads. Designed for engineers, inspectors, machinists, and maintenance professionals, it enables quick checks of thread diameter to confirm components conform to UNEF GO specifications. Its meticulous design and precise dimensions support reliable inspections across automotive, manufacturing, and general maintenance environments.

• Precise Go Gauge for UNEF External Threads: Quickly confirms that the external thread diameter meets the UNEF GO standard, delivering consistent pass/fail results during incoming, in-process, and final inspection.
• Hardened Steel Construction: Rugged, wear-resistant design provides long-lasting performance in demanding work environments while maintaining measurement accuracy over time.
• User-Friendly Conformance Identification: Clear, easy-to-read verification that helps inspectors rapidly determine whether a threaded component is properly conforming, reducing inspection time and a risk of errors.

With the JBO Thread Ring Gauge, you’ll streamline thread inspection and reduce rework. The combination of precise Go dimensions and durable construction supports consistent, repeatable results across parts and batches, helping teams meet standards faster. Whether you’re in manufacturing, maintenance, or repair, this gauge gives you reliable measurements you can trust for every threaded connection.