Keter Alibert / Garden set bolt replacement

Garden set bolt replacement with elongated shaftDue to problem that i had i found this:https://www.printables.com/model/746324-keter-alibert-plastic-chair-bolts-replacement-sparBut those bolts were not long enough so i was unable to use them. Therefore only other option was designing from scratch. Due to fact that author does not allow to remix his design I had no other choice but anyway I want to thank for giving an idea.