The Thread Detective is a precise and easy-to-use thread identifier for both nuts and bolts, consisting of gliding gauges conveniently assembled onto a wire lanyard. It is especially well suited for distinguishing between similar inch and metric threads. Our unique Thread Identifiers (aka thread checkers) are available in Metric, English Standard, and a combo of Metric and English Standard. For your convenience we provide extra-long wire rope for those hard to reach places, as well as loops on each end for convenient hanging.
Metric Thread Identifiers contain nut and bolt sizes of M1.2×0.25, M1.6×0.35, M1.6×0.20, M1.8×0.35, M2.0x0.40, M2.0x0.40, M2.0x0.25, M2.5×0.45, M2.5×0.35, M3.0x0.50, M3.0x0.35, M3.5×0.60, M3.5×0.35.