JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. It enables quick Go/No-Go checks of threaded holes, helping engineers, buyers, tradespeople, and inspectors confirm fit quickly and accurately. Sized for M3.5 x 0.35 with 4H tolerance and a Right Hand thread, this gauge delivers reliable results in a compact, easy-to-use package.

The gauge features a hardened steel construction for long wear life in demanding shop environments. Its knurled body provides a secure grip, while the machined ends deliver consistent measurements across repeated inspections. The Go/No-Go design simplifies quality checks, enabling fast, confident decisions on part acceptance or rejection.

• Go/No-Go quick checks: The Go/No-Go design lets you rapidly confirm hole size, reducing inspection time and human error so you can keep production moving.
• Hardened steel for long wear: Built to endure daily use, resisting wear and maintaining accuracy over thousands of inspections.
• Precise metric fine-thread compatibility (M3.5 x 0.35, 4H): Ensures reliable fits with standard metric components for consistent assembly results.

By integrating this plug gauge into your workflow, you gain a fast, reliable way to validate threaded holes, supporting better part fit, fewer reworks, and smoother production. Its durable construction and ergonomic grip simplify routine inspections, helping your team deliver consistent, high-quality assemblies from the first pass.