JBO Thread Plug Gauge - BSF Go-No/Go - Right Hand - Medium Class - 7/8 x 11 Die & Mould Collet Chucks reliable verification that fittings will

reliable verification that fittings will thread and seal as intended

minimizing deflection and vibration in long-reach or deep-pocket operations for more consistent dimensions

Left-hand spiral flute with through coolant: Optimizes chip clearance and surface quality by directing coolant through the flute for cleaner cuts and smoother finishes

These features translate into real-world benefits: cleaner holes with less burr

helping you reduce rework and improve overall bore quality across production runs

JBO Thread Plug Gauge - BSF Go-No/Go - Right Hand - Medium Class - 7/8 x 11 Die & Mould Collet Chucks reliable verification that fittings willThe JBO Thread Plug Gauge is a precision Go No Go tool designed to verify BSF threads in holes and housings. Its ideal for manufacturers, maintenance teams, and technicians across automotive, aerospace, and general machining environments, helping you confirm thread accuracy quickly and reliably. The go no go design lets you identify conforming and non conforming threads at a glance, reducing rework and ensuring proper fastener fit. With two distinct