The JBO Thread Plug Gauge is a precision inspection tool designed for metric fine-thread holes. It’s ideal for engineers, machinists, quality teams, and skilled hobbyists who need fast, reliable verification of M33 x 1.5 threads. Featuring a Go/No-Go design and a right-hand orientation, this gauge delivers quick, decisive checks that keep assemblies moving smoothly.

Constructed from hardened steel with a durable knurled grip, the gauge stands up to daily workshop use and provides secure handling in tight spaces. The hardened material resists wear for long tool life, reducing replacement needs and downtime while the Go/No-Go faces ensure repeatable results across jobs.

• Go/No-Go quick verification: Dual-end Go/No-Go design lets you confirm hole tolerance in seconds, speeding inspections and reducing rework.
• Durable hardened steel with knurled grip: Built to endure regular use in busy shops, the rugged construction and textured handle give you reliable, slip-free handling.
• Metric fine-thread compatibility (M33 x 1.5, 4H): Precisely matches the targeted thread size and tolerance class, delivering accurate, repeatable checks for critical assemblies.

By using the JBO Thread Plug Gauge, you streamline threaded-hole verification, improve first-pass acceptance rates, and maintain consistency across production runs. It helps you cut inspection time without sacrificing accuracy, so you can trust every fit from prototype to production.