Systems and methods for assembling and repairing chains

A chain assembly system comprising:

• an inner chain link;
• an outer chain link, the inner chain link and the outer chain link defining a pair of bores;
• a pin comprising a head end that defines a head, and a thread end opposite the head end having threads;
• a nut configured to threadingly engage the threads of the thread end of the pin;
• and
• an axial stop that is configured to block further advancement of the nut along the thread end of the pin towards the head end of the pin when the pin contacts the axial stop;
• wherein the thread end of the pin is configured to be inserted through the pair of bores that are aligned, and threadingly engaged with the nut that is configured to be externally positioned relative to the outer chain link;
• and
• wherein when the thread end of the pin is inserted and the nut is threadingly engaged with the thread end of the pin, the nut is configured to be tightened to create an interference fit between the pin and the outer chain link at the bore of the outer chain link, and further tightened until the pin contacts the axial stop to block translation of the pin thereby blocking translation of the nut.