The JBO Thread Plug Gauge (GO) — Metric Fine, Right Hand, 4H, M58 x 2 — is a precision inspection tool used to verify threaded holes against the GO standard.
Ideal for machinists, quality control professionals, and workshops that rely on consistent thread quality and quick inspection results.

• Precisely matched to M58 x 2 metric fine thread: Enables unambiguous go/no-go checks, ensuring holes meet exact size and pitch without guesswork during setup and inspection.
• Hardened steel durability for daily use: Built to resist wear and maintain accuracy through frequent insertions, reducing replacement costs and downtime in busy environments.
• Ergonomic, user-friendly design: Knurled exterior and compact form allow fast, secure handling in tight spaces, delivering repeatable checks with minimal effort.

When used in incoming inspection, in-process tests, or final assembly checks, the JBO Thread Plug Gauge helps confirm hole readiness with confidence. Its precise sizing and rugged construction translate to fewer reworks, faster setups, and consistent results across parts and operators—supporting tighter production schedules and higher-quality assemblies.