HOME and how to join Forum Open Area General Scott topics whats the purpose of dual hex nuts Re: Re: whats the purpose of dual hex nuts

Stan Thomas

I researched the origin of these nuts (which were only one size – 3/8 BSF) with a major fastener (nuts to you) manufacturer, and apparently they were for an R.A.F contract after the WW2 – but how Matt got them (other than out of a skip) remains a mystery…….

You have a choice regarding why they are bi-hexagonal, as the boffins (even those not domiciled near Nottigham) cannot agree as to whether it was to save material or effect some measure of “torque-up control” out in the colonies.

No wonder the ‘planes I maintained during National Service kept crashing.