JBO Thread Plug Gauge - UNF Go-No/Go - Left Hand - 2B - 3/4 x 16 FMH Material: Carbide for higher hardness

Material: Carbide for higher hardness and wear resistance

it pairs well with standard collets and tool holders to maintain alignment and cutting stability throughout the reaming process

the efficient left-hand spiral flute for effective chip removal

clean countersinks with every cut

helping teams keep workflows moving and reduce rework

JBO Thread Plug Gauge - UNF Go-No/Go - Left Hand - 2B - 3/4 x 16 FMH Material: Carbide for higher hardnessThe JBO Thread Plug Gauge is a precision inspection tool designed to verify internal UNF threads quickly and reliably. It targets left hand 3 4 16 LH threads, providing a clear go no go check to confirm hole conformity and proper mating with fasteners. Ideal for manufacturing, automotive, and aerospace environments, it helps technicians, inspectors, and machinists ensure threads meet the 2B tolerance class with consistent results. Go No Go design for