JBO Thread Plug Gauge - UNF Go-No/Go - Right Hand - 3B - No. 1 x 72 FHH right-hand threads in the 4h

right-hand threads in the 4h tolerance class

thanks to the ISO H5 tolerance and the robust M2 steel

more accurate threads

With a 3 mm diameter and 12 mm long neck

durable carbide performance

JBO Thread Plug Gauge - UNF Go-No/Go - Right Hand - 3B - No. 1 x 72 FHH right-hand threads in the 4hThe JBO Thread Plug Gauge is a UNF Go No Go gauge designed for precise inspection of internal threads. Sized No. 1 x 72 with 3B tolerance and right hand threading, it helps engineers, machinists, inspectors, and quality teams quickly verify threaded holes against Unified thread standards in manufacturing, automotive, and aerospace environments. Its Go No Go design gives immediate pass fail feedbackyou can confirm proper engagement or flag non