Reattaching screw post to PCB

Unfortunately for me.. I've had numerous issues with the front facing camera cable assembly on my iPhone 5. Somehow in the process of repeatedly installing and uninstalling the replacement cables, retesting each cable, I sheared a screw post off the PCB. 3 screws hold the cable cover down, and I haven't had issues only using 2 screws. However, I would really like to reattach the 3rd screw post (outlined in yellow in the picture link below), but I'm not sure what I should use to reattach the post to the pcb. Any suggestions? Thank you.

If anyone doesn't want to use the link above, it's the screw post directly below the spudger in step 11 below. The screw post where the non-magnetic screw goes, directly below the rear facing camera.

Замена фронтальной камеры и сенсорного шлейфа iPhone 5

*Edited to remove imagebam link, and insert picture here, which I didn't know I could do.