The Thread Detective is a precise and easy-to-use thread identifier for both bolts and nuts, consisting of thread checkers assembled on to a wire lanyard. It is especially well suited for distinguishing between similar inch and metric thread types.
The Combo Thread Detective has the following checking sizes: UNC and UNF: 6-32, 8-32, 10-24, 10-32, 1/4-20, 1/4-28, 5/16-18, 5/16-24, 3/8-16, 3/8-24, 7/16-14, 7/16-20, 1/2-13, & 1/2-20. Metric: M4x0.7, M5x0.8, M6x1.0, M8x1.0, M8x1.25, M10x1.0, M10x1.25, M10x1.50, M12x1.25, M12x1.5, & M12x1.75.
