JBO Thread Ring Gauge (NoGo) - UNJC - Right Hand - 3B - 5/16 x 18

The JBO Thread Ring Gauge (NoGo) for UNJC, Right Hand, 3B, 5/16 x 18 is a precision inspection tool designed to quickly verify external thread diameters against the Unified standard. Built for manufacturers, machine shops, automotive, aerospace, and maintenance teams, it helps inspectors confirm whether a threaded part will fit correctly on the first try. The ring’s knurled outer edge provides a secure grip for frequent use in busy work environments.

Its NoGo design creates an unmistakable pass/fail read on non-conforming threads, enabling rapid decisions on part acceptance, rework needs, or supplier communication. Crafted from hardened steel, the gauge resists wear and maintains accurate measurements through repeated use in demanding production settings.

• No-Go Pass/Fail Design: Delivers a fast, visual indication of whether a thread is within spec, helping you reject out-of-tolerance parts in seconds and keep production lines moving.
• Durable Hardened Steel Construction: Built to withstand daily use in workshops and factories, providing stable, repeatable measurements and a long service life with minimal maintenance.
• UNJC 5/16 x 18 Right-Hand 3B Precision: Precisely matched to the UNJC standard and right-hand threading, enabling reliable, repeatable checks across batches and reducing measurement drift.

Using this gauge helps streamline quality control, reduces downtime, and supports consistent, auditable thread checks across assemblies. With its NoGo configuration and hardened steel construction, you can trust quick, accurate verification that parts will mate correctly with mating components, ultimately improving throughput and overall performance in your production workflow.