[Boatanchors] off topic - 3/16 female spade connectors

[Tom Chesek]

I have to replace two 3/16” female spade connectors that attach to a thermo switch on a microwave oven and I am looking for help with your knowledge of electrical connectors.  It seems to me that most spade connectors are made of a softer metal (aluminum maybe) but the connectors on appliances seem to be of a higher grade (harder metal) to sustain exposure to higher temperatures.  Can someone point me in the right direction as to the type of connector and where I might source a few of them?  I have plenty of standard run of the mill spades but need to know what to look for outside the run of the mill realm.

Thanks & 73,
Tom K3TVC