The Thread Detective is a precise and easy-to-use thread identifier for both nuts and bolts that consists of gliding gauges conveniently assembled onto a wire lanyard. It is especially well suited for distinguishing between ...

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The Thread Detective is a precise and easy-to-use thread identifier for both nuts and bolts that consists 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.

Inch Thread Identifiers contain nut and bolt sizes of 5/8-11, 5/8-18, 3/4-10, 3/4-16, 1-8, 1-12

Metric Thread Identifiers contain nut and bolt sizes of M4x1.5, M14x2.0, M16x1.5, M16x2.0, M20x1.5, M20x2.5, M24x2.0 and M24x3.0

The Combo Thread Identifier Set unites all thread sizes from both the Metric and Inch versions.

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