The JBO Thread Plug Gauge is a precision inspection tool designed to verify metric coarse threads in threaded holes. Ideal for engineers, machinists, maintenance teams, and hobbyists, it delivers fast, reliable go/no-go checks for M1 x 0.25 coarse threads, helping ensure components fit correctly and function as intended.

• Go/No-Go Design for Fast, Clear Acceptance Checks: Quickly determine whether a hole meets the specified M1 x 0.25 coarse-thread tolerance with simple pass/fail action, reducing inspection time and minimizing guesswork.
• Hardened Steel Construction for Long-Lasting Reliability: Built to withstand frequent use in busy environments, resisting wear and maintaining measurement integrity over many cycles.
• Right-Hand, 4H, M1 x 0.25 Precision for Metric Coarse Threads: Precisely matched to standard metric coarse thread form, enabling consistent checks across parts and suppliers.

Used in quality control, assembly, and field maintenance, this gauge helps ensure proper thread engagement and reliable performance. It supports faster inspections, reduces the risk of incorrect fittings, and contributes to tighter tolerances without complicating workflows. With its durable construction and straightforward Go/No-Go check, you can trust it to deliver consistent results over time.