Yes but you can get the same at a hardware store, J&P are great for customer service, you can call and speak to a tech and if you have any issues with the parts you can return no questions asked,that is as long as you spoke with a tech before you purchase and they tell you it will work. They are good about returns anyway but ,as to be expected, there has to be a good reason.
The thread might be different, and be sure you have enough length to go through the fender,fender strut,spacer, and into the signal.