top LCD panel hinge pins

Ok i got a macbook air a1237 that I'm repairing as a hobby. I've so far replaced the screen and now I'm trying to fix the hinges on the LCD top part. what I'm looking for and hopefully someone can point me to the right direction is the pins the attach to the hinge. they are little semi-circle clips with a flat top part that attach to the rod on the hinge. usually so i have been told that there are at least 20 pins per hinge this keeps the top LCD panel standing firm at any angle.

so anyone know where i can buy these pins, i have look on ebay but i have found nothing. i have a set of LCD hinges and a set of case hinges all i need is the pins that attach to the rods of the LCD hinges.

Thanks in advanced