Difference Riveting Effect between Half Threaded and Full Threaded Tee Nut

As we know, DIN 1624 Tee Nut is is widely used in wooden furnitures, sofas, office chairs, beds, polywood, and other materials, to be functioned as a fastener. There are two threaded types of Tee Nut, and sometimes people are difficult to distinguish from the outlook of tee nuts, while it's very easy to distinguish it by the riveting effect.

Blow photo disclose the different riveting effect between half threaded and full threaded:

And here is the real riveting photos for using riveting machines to rivet tee nut into wood: