The JBO Thread Plug Gauge is a precision inspection tool designed for metric coarse threads. It's ideal for engineers, machinists, buyers, tradespeople, and hobbyists who need reliable, standardized checks of internal threads to ensure proper fit and function. This Go/No-Go gauge verifies M1.6 x 0.35 holes to the 6H tolerance, delivering a quick, definitive pass or fail for each part.

Constructed from hardened steel, the gauge is built to endure heavy use in busy workshops, maintaining accuracy across multiple inspections.

• Go/No-Go Validation for Fast, Confident Inspections: Quickly determine whether a hole meets the M1.6 x 0.35 thread with 6H tolerance, helping you approve correct parts and flag out-of-tolerance holes in moments.
• Hardened Steel Construction for Durability: Designed to resist wear and maintain precision through thousands of inspections in demanding environments.
• Right-Hand Metric Coarse Thread Alignment: Specifically tuned for right-hand coarse threads (M1.6 x 0.35), ensuring consistent, reliable checks that match production specifications.

Used in quality control, assembly, and incoming inspection, the JBO Thread Plug Gauge streamlines checks, reduces rework, and supports consistent thread fits across batches. Its straightforward go/no-go design and durable construction help your team move faster with greater confidence, delivering dependable results from the first part to the last.