The JBO Thread Plug Gauge is a precision Go/No-Go gauge designed specifically for metric fine threads. With a right-hand configuration for standard threading, this gauge covers M3 x 0.35 threads with a 6H tolerance, making it a reliable tool for quality control, machining, and assembly work. Easy to use and built for busy shops, it helps ensure every threaded hole accepts the intended part with confidence.

• Go/No-Go quick verification: Quickly determine whether a threaded hole meets spec, reducing inspection time and avoiding guesswork or misfits in downstream assembly.
• Precision metric fine thread (M3 x 0.35) with 6H tolerance: Provides consistent, repeatable checks for small-diameter holes, helping maintain tight quality standards in precision projects.
• Hardened steel construction for durability: Built to withstand daily use in demanding environments, delivering long tool life and stable accuracy over time.

Designed to streamline inspections and improve throughput, this plug gauge minimizes rework and speeds up first-pass acceptance. Its robust build and accurate threading reference support reliable mating in tight-tolerance applications, making it a dependable addition to any shop, quality lab, or manufacturing line.