Putting together bookcase. Has "camlock" fasteners. How are those used?

These are not the "locks" that I have found when I try to look this up. They're kind funny looking screws. HELP!!

Answers:
You screw in the pins on one piece and insert the cams (with the philips notch) in the other. Fit the piece with the cams over the pins, then tighten the cams with a screwdriver, this will lock the pieces together.

Other answers:
If I understand you right...

you just hammer them in... they dont come back out...

so, dont screw it up
If I understand you right...

you just hammer them in... they dont come back out...

so, dont screw it up
Just turn until they "click". They wedge into the space 'til tight.
Here's a couple of links that show how the cam lock go together. Hope it helps.
On the camlock (one side male and other side female)there is a marking for open position during assembly , screw on to tightened
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