Many thanks for your response and time taken to obtain the dimensions – very helpful. My ‘bolt’ conforms with your dimensions. The ‘domed nut’ is 1-3/16″ long x 11/16″ diameter and frame lug hole diameter approx. 3/4″ diameter – so here lies the problem. If anyone has a spare ‘domed nut’ for sale please contact me.
Many thanks/Regards/Ian Moorey
For Info and to avoid any confusion : The above post dated 22nd April was from myself and not Johannes – Do’nt know how this happened !