Nose wheel hardware

[A&PGuy]

I appreciate the prompt response from the forum; what a great source of information. I downloaded all 3 IPCs from Textron. The 1965-1968 version, which I have, has the MS20365-516C part number for the nut, as does the IPC ending in 1972. For the 1973 to 1980 IPC, the part number for the nut changed to A1639-26, which was then changed to A1639-3 on the Textron site. I was just about to call Textron to ask for guidance. I'll try the suggestions mentioned. Thanks to all!