The JBO Metric Coarse Thread Go/No-Go Plug Gauge is a precision tool for verifying internal metric coarse threads. With a Right Hand 6G configuration for M1.8 x 0.35, it helps machinists, inspectors, and assembly teams quickly confirm hole readiness. Crafted from hardened steel for long-lasting durability, this gauge stands up to frequent use in workshop and production environments.

• Go/No-Go inspection at a glance: The dual-end design lets you verify both the GO and NO-GO limits quickly, so you can approve or flag holes in seconds without guessing.
• Rugged, hardened steel construction: Built to withstand daily use, resist wear, and maintain accurate measurements through heavy-duty inspection tasks.
• Metric coarse thread accuracy for M1.8 x 0.35, 6G, Right Hand: Precisely tuned to standard coarse-thread tolerances, delivering dependable, repeatable results across parts and batches.

Used in quality control and assembly, this plug gauge simplifies thread inspection, letting teams confirm proper hole size before production proceeds. The Go/No-Go approach reduces guesswork, lowers the risk of misfit parts, and helps you pass more parts on the first check. With rugged construction and precise tuning for metric coarse threads, it supports consistent results, longer tool life, and smoother workflows in machining shops, job sites, or manufacturing lines.