We also supply a screw, nut and washer for mounting. In order to make the part as universal as possible, you might find that we left the screw a little long for some installations. Nonetheless, it can be cut flush with the nut face after the installation is completed. This part is sized to fit with any of the common stamped hanger plates. If you have a non-Firestik stud mount there is a good chance that it has inferior ABS insulators.
ABS has a tendancy to crack, or worse, to compresses under pressure.
External Locking - There are times when it is convenient to be able to quickly remove your antenna without fumbling around for tools. Perhaps your antenna is too tall to fit into your garage, or you often park in a high theft area. Maybe you don't use your antenna every day but want to be able to snap it on in a hurry when you do want to use it. If that's the case, a quick disconnect is all that you need. Firestik offers two quick disconnect models.