JBO Thread Ring Gauge (GO) - Metric Coarse - Left Hand - 6g - M4 x 0.7 M&D 56 mm with a left-hand

56 mm with a left-hand spiral flute

98 mm size and strict DIN/ISO tolerances ensure a consistent fit in standard tool holders

Versatile 100 mm Reach: The 100 mm reach provides flexible setup options while preserving rigidity and control for deeper or hard-to-reach features

Shank type: Straight shank for easy clamping in a wide range of tool-holding systems

consistent machining even in challenging workpieces

JBO Thread Ring Gauge (GO) - Metric Coarse - Left Hand - 6g - M4 x 0.7 M&D 56 mm with a left-handThe JBO Thread Ring Gauge (GO) Metric Coarse Left Hand 6g M4 x 0. 7 is a precision Go gauge built to verify external threads on metric coarse fasteners and components. It helps engineers, machinists, quality inspectors, and maintenance technicians quickly confirm whether a parts threads will engage properly with mating pieces, supporting accurate assembly and reliable performance. Manufactured from hardened steel, this gauge delivers rugged durability