So one of the terminal wires on my families range melted off (one of the black wires) which was probably caused by a loose connection and they ordered a terminal kit but apparently it's meant for dryers. https://www.whirlpoolparts.com/PartDetail/Terminal-Kit/279318/469513 It seems to be the same type of wire but it has screws where the rings/lugs are suppose to go. This is probably a stupid question but if I unscrew those and just leave the hole and inserted into the block, would that work? Would it be able to handle the load and create a tight connection? If not, could I remove those and put a lug on the ends instead? The electric range model is a whirlpool WFE505W0HZ1
Wait. You are paying $32 for four #12 pigtails?
No, return them, they are too small anyway. They should be #6 (if the breaker is 50A) or #8 if the breaker is 40A, unless it is a factory authorized replacement part for your exact model.
I would just go to an electrical supply house with the burnt pigtail and see if they have those lugs, or better, a premade pigtail in that color. It won't be $32.