The JBO Thread Plug Gauge (NoGo) – Metric Fine – Left Hand – 6H – M64 x 1.5 is a precision internal thread gauge designed for metric fine threads. It enables quick, reliable inspection of threaded holes to verify they meet exact specifications, helping quality control and assembly teams confirm proper fit every time.

Crafted for durability and consistent performance, this gauge uses hardened steel and a knurled body for a secure grip in busy workshop environments. Its Left-Hand configuration is specifically suited for checking LH threaded holes, ensuring you can accurately validate components without switching tools.

• Precise metric fine thread compatibility (M64 x 1.5, 6H, Left-Hand): Engineered to match metric fine threads and the 6H tolerance, enabling accurate Go/No-Go assessments for left-hand threaded holes.
• Rugged, durable construction: Hardened steel construction with a knurled surface provides long life and reliable handling in demanding conditions.
• Fast, reliable go/no-go inspection: Simple plug-gauge design with a clear NoGo reference lets you make quick pass/fail decisions, reducing inspection time and rework.

Using the JBO Metric Fine NoGo gauge streamlines threaded-hole inspection across production, maintenance, and quality assurance. It delivers confident, repeatable results, supports efficient workflows, and helps maintain consistent thread quality throughout your parts and assemblies.