The JBO Thread Plug Gauge is a metric coarse Go/No-Go inspection tool designed for precise verification of threaded holes. Ideal for machinists, quality control professionals, and hobbyists, it ensures M1.8 x 0.35 right-hand threads are within specification with quick, trustworthy checks.

Crafted for durability, this plug gauge is built from hardened steel to withstand daily shop use and deliver consistent performance over time. Its robust construction reduces wear and maintains accuracy across many inspection cycles.

• Go/No-Go design for fast, confident checks: Quickly determine whether a threaded hole meets tolerance with a single pass, speeding up setup and reducing guesswork on the shop floor.
• Durable hardened steel construction: Withstands heavy use in busy environments, providing reliable, long-lasting performance and reducing the need for frequent replacements.
• Metric coarse thread compatibility: M1.8 x 0.35, right-hand, 4H: Specifically calibrated for standard metric coarse threads, ensuring precise hole sizing and consistent results across parts and assemblies.

Using the JBO Thread Plug Gauge helps streamline QC workflows, minimizes rework, and supports repeatable, accurate assemblies. Its combination of precise Go/No-Go functionality and rugged construction gives you a dependable reference tool that boosts confidence in every measurement and contribution to overall product quality.