JBO Thread Plug Gauge (NoGo) - Metric Fine - Left Hand - 6H - M64 x 2 is a precision inspection tool designed to verify metric fine-threaded holes with reliable accuracy. It’s ideal for machinists, quality inspectors, engineers, and workshop technicians who need quick, dependable go/no-go checks to confirm hole size and thread engagement.

Crafted from hardened steel for durability, this gauge is built to withstand the rigors of busy shop environments. Its left-hand configuration and precise M64 x 2 fine-thread specification, produced to 6H tolerance, ensure consistent measurements across demanding applications and long service life.

• Precise metric fine thread verification: engineered to exact M64 x 2 specifications with 6H tolerance, enabling reliable hole-inspection and consistent results every time.
• Durable hardened steel construction: designed to resist wear and maintain accuracy in busy workshops, delivering lasting performance under demanding use.
• Left-hand thread compatibility with NoGo design: tailored for left-handed applications, providing clear pass/fail checks and reducing setup time on threaded components.

Used in inspection routines and quality control workflows, this gauge helps you quickly determine whether a threaded hole meets the required standard, minimizes rework, and supports repeatable, high-quality assemblies across production runs.