The Thread Detective


Check Internal and External Threads Easily and Precisely

Fed up of struggling to identify bolt and nut threadforms? You need to buy our thread finder! The Thread Detective is a precise and easy-to-use thread identifier for both bolts and nuts, consisting of thread checkers conveniently assembled onto a wire lanyard. It is especially well suited for distinguishing between similar inch and metric thread types.

Thread Detective - easily identify threadforms - thread gauge, thread identifier

Identify thread types of Metric and Imperial Fasteners Quickly and Easily

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.


SizePriceAdd to Cart
Combo Thread Detective - Single£45.00


The ideal gift for the man who has everything!

Whether a professional or DIY enthusiast – for anyone who uses bolts and nuts, the Thread Detective saves time and effort by identifying thread type in the simplest, easiest way possible, making our thread checker an ideal gift for Christmas, Birthday or special occasions for the man who has everything.

Thread type and size is permanently marked onto each piece and is coated with a clear PVC cover to prevent the marking being erased. All Thread Detective are equipped with an 85mm ruler for measuring stud lengths.

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.

Additional information

Weight N/A