JBO Thread Plug Gauge (GO) - Metric Fine - Right Hand - 6H - M42 x 3 Hydraulic Expansion Chucks Left-hand spiral flute with right-hand

Left-hand spiral flute with right-hand cutting: optimized geometry for stable reaming

making it ideal for complex shapes

fewer setup adjustments

repeatable hole sizes that reduce rework and improve part-to-part consistency

Benefits: The six-flute stub design supports stable hole finishing and efficient swarf removal when used in standard toolholders

JBO Thread Plug Gauge (GO) - Metric Fine - Right Hand - 6H - M42 x 3 Hydraulic Expansion Chucks Left-hand spiral flute with right-handJBO Thread Plug Gauge (GO) Metric Fine Right Hand 6H M42 x 3 is a precision inspection tool designed to quickly verify threaded holes meet exact size and thread standards. Ideal for machinists, quality teams, engineers, and workshop hobbyists, it provides a fast, reliable check that holes are properly tapped and ready for assembly. Precise metric fine GO gauge for M42 x 3 righthand threads: ensures consistent, repeatable hole verification so you can