JBO Thread Plug Gauge (NoGo) - Metric Fine - Right Hand - 6H - M55 x 1 FHH standard length: Ensures secure seating

standard length: Ensures secure seating and repeatable alignment in compatible holders

Deliver finish-ready holes to 21

reducing the need for tool changes and improving process stability

2-Flute Configuration for Smoother Cutting: The two-flute design minimizes chatter and cutting forces

HSS-E cobalt construction (M35): High wear resistance for longer tool life and reliable performance on steel

JBO Thread Plug Gauge (NoGo) - Metric Fine - Right Hand - 6H - M55 x 1 FHH standard length: Ensures secure seatingThe JBO Thread Plug Gauge (NoGo) Metric Fine is a precision measuring tool designed to verify metric fine threaded holes. Specifically sized for M55 x 1, right hand threads with a 6H tolerance, it helps machinists, inspectors, and quality teams confirm holes meet spec quickly and consistently. Made from hardened steel with a knurled body and a color coded collar, this NoGo gauge is built for durability and easy handling in busy workshops. Its robust