The pin is correct, buy you may not have a master link anymore. The master link that goes with the pin you ordered from Deere has a slot cut on one side for the head to go into, and the other side is milled off. If the link you are working on looks identical to all the other links in the rail, then you don't have a master link. Only way to do that is with a drive master pin. I have them in stock, let me know if I can help.