JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M30 x 1 Face Mill Arbors - Through Coolant ISO H5 tolerance: Ensures consistent

ISO H5 tolerance: Ensures consistent hole size and reliable fit across parts

Coating: AcuRea multi-layer nano chrome coating for reduced wear and improved tool life

this reamer resists deflection in small-diameter bores while maintaining a stable cutting action

Its straight shank and DIN 212-B form factor ensure compatibility with standard toolholding setups

and the K10 carbide combination balances wear resistance with toughness for steady performance in a range of shop environments

JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M30 x 1 Face Mill Arbors - Through Coolant ISO H5 tolerance: Ensures consistentThe JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads, specifically calibrated for M30 x 1 holes. Its Go No Go design lets you quickly verify hole size, and the left hand configuration with 6H tolerance fits standard fixtures and quality requirements. Made from hardened steel, it delivers durable, long lasting performance in busy workshop environments. Go No Go precision checks: Quick pass fail verification for M30