JBO Thread Plug Gauge (NoGo) - Metric Fine - Left Hand - 6H - M48 x 1.5 Die & Mould Collet Chucks The ISO H5 tolerance ensures

The ISO H5 tolerance ensures tight control over hole diameter

supporting longer cuts and steadier diameters across multiple materials

The neck is shaped without a notch to help prevent breakage during deep cuts and long cycles

this HSS (M2) reamer uses a BS 328/4 taper shank for secure seating and predictable performance

and supports consistent results across daily production runs

JBO Thread Plug Gauge (NoGo) - Metric Fine - Left Hand - 6H - M48 x 1.5 Die & Mould Collet Chucks The ISO H5 tolerance ensuresThe JBO Thread Plug Gauge (NoGo) Metric Fine Left Hand 6H M48 x 1. 5 is a precision measurement tool designed to verify internal threads in metric fine pitch holes. Its ideal for machinists, quality inspectors, and workshop technicians who need fast, objective verification of hole size and tolerance. Crafted from hardened steel for durability, this gauge resists wear in busy environments and maintains its accuracy over many uses. The left hand design