Linkage stoppers don't need the threading.
Normally you would just make a Z bend on one end and the linkage stopper. (https://www.dubro.com/collections/e-z-connectors) for adjustability on the other end.
The need for a threaded wire is if you use a clevis on one end. (https://www.dubro.com/collections/kwik-links-clevis/products/nylon-kwik-link-on-12-2-56-rod-1pkg)
Normally you would just make a Z bend on one end and the linkage stopper. (https://www.dubro.com/collections/e-z-connectors) for adjustability on the other end.
The need for a threaded wire is if you use a clevis on one end. (https://www.dubro.com/collections/kwik-links-clevis/products/nylon-kwik-link-on-12-2-56-rod-1pkg)