British Special Fasteners

Hague Screw Thread Calculator

Throw away those Thread Data Tables and Screw Thread books as Hague Fasteners bring you the perfect Engineers Thread Companion.

Now you can see all the data you need for Unified & Whitworth Imperial Screw Threads along with ISO Metric and Custom threads.

This handy calculator shows all the data you need for Standard UNC, UNF, UNEF, BSW, BSF, Metric Coarse & Metric Fine along with the facility to create any non standard custom thread size / thread pitch combination to see all the critical nominal dimensions.

Hague Fasteners are not responsible for any technical errors or typographical errors in this calculator. All critical data should be checked and verified against the relevant International Standard prior to use.