The JBO Thread Ring Gauge (GO) for UNEF left-hand threads is a precision inspection tool designed to verify external thread diameters with reliability. Sized for 13/16 x 20 UNEF left-hand threads and offered as a Go gauge, it helps engineers, machinists, inspectors, and quality teams confirm that threaded components meet the required maximum limit before assembly.

Crafted from hardened steel, this gauge delivers durability and wear resistance in busy workshops. Its robust construction supports frequent use in production lines and quality labs, maintaining accurate readings over time and resisting deformation from routine handling.

• Precise Go Gauge for UNEF Left-Hand Threads: Verifies the maximum material condition of external threads, enabling quick and reliable conformance checks for 13/16 x 20 UNEF left-hand components.
• Hardened Steel, Wear-Resistant Construction: Built to endure daily workshop use, delivering long service life and stable readings even after repeated insertions and removals.
• Size- and Class-Specific Fit: 13/16 x 20 UNEF, Left-Hand, 2A: Ensures consistent measurements with the exact standard, reducing guesswork and batch-to-batch variation.

Using this Go gauge streamlines inspection workflows, helps you identify non-conforming parts before assembly, reduces rework, and supports consistent thread quality across batches. With a durable, precise tool at hand, you can trust measurement accuracy, speed up quality checks, and maintain confidence in your threaded assemblies.