The JBO Thread Plug Gauge is a precision Go/No-Go inspection tool designed for metric fine threads. It helps machinists, inspectors, and assemblers quickly verify internal threads so components thread together cleanly and reliably.

Sized specifically for M22 x 0.75 right-hand threads with a 6G tolerance, this gauge features a hardened steel body for long-lasting use in busy workshops and QC stations.

• Go/No-Go design for quick acceptance testing: Instantly confirms whether a threaded hole meets spec by showing a clear pass or fail, reducing inspection time and rework.
• Durable hardened steel construction: Built to withstand repeated use in demanding shop environments, delivering consistent performance over time.
• Precisely sized for M22 x 0.75, 6G right-hand threads: Provides accurate checks that align with common metric fine-thread applications, helping ensure reliable assembly and quality control.

With the JBO Thread Plug Gauge, you gain reliable, repeatable thread verification that speeds up production and improves fit accuracy. Its robust build minimizes downtime from worn gauges, while the exact metric sizing helps maintain consistent results across parts and assemblies. Use it in first-pass QC or in-line checks to reduce scrap and boost confidence in every threaded connection.