Chrome trim fasteners help

[StealthSRT10]

So i have all my chrome installed except the thick pieces that go on the sides by the rear side window. (cant think of what its called) anyways the chrome trim has a few little spikes sticking out that go into the car and i assume something that looks like a brake hold down retainer looks like goes on it to hold it. I need to figure out what they are called or where i can get some.

any help is greatly appreciated. Im sure im making it alot harder than it needs to be.

[Tbird1044]

I used speed nuts with a fender washer to cover the hole. Also used some good sealer. Just make sure you get the correct size so you don't break off the spikes or pins.
Nyles

[jopizz]

As Nyles mentioned you want 3/16" self threading nuts also called speed nuts. Your local home center store may have them .

John

[StealthSRT10]

ok thats what i thought they were called but i could only find the kinda square ones.