I believe the lower ones are 45° ¼" UNF with a washer spec'd to allow best orientation for grease gun, although my car doesn't have these. Do ensure any replacement doesn't have a longer thread than OE to avoid binding on kingpin!

Upper ones are 90° ⅛" BSPT thread.

Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone