The 6th generation Accord disk brakes have rotors which are initially fastened to the hub with two screws. When the wheel is put on the lug nuts clamp the rotor between the hub and the wheel, as on any other car. Other cars, at least non-Honda cars, don't have those two screws. The binding force from the lug nuts has got to be much much higher than from the two not very large screws. Why does Honda use those screws on this car when they are not used on (most) other cars?

On a related note, many of the YouTube videos for changing the disk pads on the 6th generation Accord do so by removing one bolt and rotating the caliper up and out of the way. The caliper isn't serviced, during the procedure, other than pushing the piston back in so that the caliper can be lowered down over the new, and thicker, pads. On many other vehicles it is common to pull, grease, and reinsert the caliper pins when changing the pads. Why isn't that suggested for this car?

 

The screws are for assembly and convenience. Literally just there to keep the rotor from flopping about when not captured by the caliper/bracket. You are free to remove the caliper to service the slide pins if needed. A pin or boot kit will come with the correct grease. For God’s sake, don’t use anti-seize compound as so many hacks do on YouTube and in real life.

 

^^^^^^^This.