The JBO Thread Plug Gauge (GO) is a precision inspection tool designed to quickly verify metric threaded holes. It’s ideal for engineers, machinists, quality teams, and hobbyists who need reliable hole checks that don’t slow down production. This GO gauge helps you confirm that a threaded hole meets the required standards at a glance, reducing guesswork and rework.

This go gauge is configured with right-hand threading, metric fine pitch, and a size specification of M85 x 3 with 6H tolerance. Crafted from hardened steel, it delivers outstanding durability and wear resistance, making it a dependable choice for daily use in busy workshops and manufacturing environments. Its straightforward design makes it easy to identify holes that meet specification on the first check.

• GO Gauge for fast hole acceptance: Quickly determine whether threaded holes meet minimum diameter and thread form, speeding inspections and reducing costly rework.
• Metric fine threading (M85 x 3) with 6H tolerance and right-hand orientation: Precise go size aligned with standard metric threads to deliver consistent, repeatable results across batches.
• Hardened steel construction for durability: Built to withstand daily use in demanding environments, delivering long service life and reliable performance over time.

Together, these features streamline quality control, shorten inspection times, and enhance confidence in every part. Rely on consistent, accurate hole verification that supports efficient workflows and high-quality outcomes.