The JBO Thread Plug Gauge is a precision Go/No-Go tool designed for metric coarse threads. It helps engineers, machinists, and quality teams quickly verify that threaded holes meet the correct size and tolerance for reliable, repeatable assemblies. Specifically calibrated for M7 x 1 coarse threads, it supports efficient quality checks and consistent results on the shop floor.

This Left Hand gauge is built for rugged use. Crafted from hardened steel, it resists wear and maintains accuracy through repeated inspections, delivering long-lasting performance in demanding production environments.

• Go/No-Go design for fast, reliable hole inspection: Quickly determine if the thread hole is within tolerance without full thread measurement, helping you approve good parts and reject out-of-spec holes in seconds.
• Left-Hand, metric coarse M7 x 1 compatibility: Specifically tuned for M7 x 1 coarse threads with left-hand orientation to match LH components, ensuring correct fitment checks and reducing ambiguity during assembly.
• Hardened steel construction for durability: Built to resist wear from daily shop use, delivering stable measurements and long service life.

Using this gauge speeds up quality control by letting operators confirm hole suitability at a glance, saving time during setup and reducing rework. Its durable design keeps measurements consistent across shifts, helping teams meet tight production schedules with confidence.