clamp force divide by surface ?

hi, newbies here!

try to run simulation with clamp force by bolt/screw..

check some catalogue, they provided the clamp load value

just wonder should that value be divide 2 since bolt is clamp against 2 surface ?

here is what i am try to do:

i want to simulate respond of one body under another body when they clamp together with bolt/screw

and now wondering what value should i use,

pls dun tell me gravitational force, i hv include it, thanks!

SolidworksSimulation