The JBO Thread Plug Gauge is a precision inspection tool designed to verify metric fine threads in threaded holes. It’s ideal for machinists, quality-control teams, and assembly specialists who need reliable, repeatable thread validation where precise fits matter.

Designed as a right-hand gauge with an M32 x 2 thread size and 4H tolerance, it pairs accuracy with durability. Made from hardened steel, the gauge withstands daily use in demanding workshop environments, while the Go/No-Go design lets you quickly accept or reject holes at a glance.

• Go/No-Go quick checks: The Go/No-Go design lets you determine immediately whether a threaded hole meets the required metric fine-thread specification, speeding up inspection and reducing the chance of misfits in assemblies.
• Precisely matched for M32 x 2 fine threads: Specifically engineered for metric fine threads, this gauge provides reliable validation of hole threads in critical fits, helping you confirm correct engagement before parts are mated.
• Durable hardened steel construction: Built to withstand frequent use, the hardened steel offers long life and resistance to wear, maintaining measurement accuracy across repeated checks in busy production lines.

Using this gauge in your inspection routine helps you achieve faster, more reliable threading checks, reducing rework and ensuring components mate correctly on first assembly. The durable construction supports daily shop use, while the metric-specific sizing ensures you’re validating the exact hole you intend to thread, giving you confidence from setup to final assembly.