The JBO Thread Plug Gauge is a precision tool designed to verify metric fine-threaded holes. It’s ideal for engineers, machinists, inspectors, and maintenance teams who need fast, reliable checks to confirm threads are within spec. This Go/No-Go gauge specifically targets M27 x 1.5 right-hand threads to ensure components thread together smoothly.

Constructed from hardened steel with a knurled handle, it stands up to daily shop use. Color-coded ends help you quickly identify Go and No-Go checks, letting you switch between ends in seconds while maintaining consistent pressure and alignment.

• Go/No-Go quick checks: Enables rapid pass/fail assessment of threaded holes, reducing inspection time and scrap.
• Hardened steel durability: Rugged, wear-resistant construction that stands up to repeated use in busy shops while maintaining accuracy.
• Precise right-hand M27 x 1.5 with 4H tolerance: Specifically sized for metric fine threads with a ready-to-use Go/No-Go configuration and color-coded ends for easy orientation.

Using this gauge in your workflow helps you verify thread quality at a glance, minimize assembly delays, and standardize inspections across parts and operators. It delivers consistent, actionable results—so you can trust your holes mate cleanly with bolts and fittings and keep production moving with fewer reworks.