The JBO Thread Plug Gauge (NoGo) — Metric Coarse, Right Hand, 6H, M56 x 5.5 — is a precision inspection tool for verifying threaded holes. Built for engineers, buyers, tradespeople, and quality teams, it ensures the correct fit and reliable function of mating parts by confirming holes meet the specified size and tolerance.

• NoGo verification for metric coarse threads: Quickly confirms holes meet the M56 x 5.5, 6H specifications, helping prevent out-of-tolerance parts from passing inspection.
• Rugged, hardened steel construction: Delivers long tool life and dependable performance in demanding workshop environments.
• Ergonomic, user-friendly design: Easy to use with precise measurements, supporting consistent results across operators and shifts.

Used as part of a disciplined quality control workflow, this gauge speeds up inspections and reduces rework by delivering clear pass/fail indications for threaded holes. Its durable build and precise sizing give you confidence in every assembly, helping maintain consistent fit, reliability, and workflow efficiency across production runs.