The only fail safe rigging insulator for wire available on the market today, the Hi-MOD backstay insulator has an internal ball-socket in the main body. The nut is insulated from the stainless steel body by a Tufnol™ spacer, preventing electrical transference to the insulator body or opposite terminal. Should, for any reason, the Tufnol™ be compromised, the nut will bottom out against the stainless housing. While the backstay will loosen, the insulating studs will remain attached to the insulator body-allowing the rig to be re-tensioned until a repair can be made.