Mounting bolts for caliper

[Tikki]

hello  two of mine mounting bolts for the caliper holder is almost stripped. and I need some new ones.

do I need to use the original bolts or just som regular ones with same dimension and torx head? 
i see that the unoriginal has a little smaller head than the original type ones 

need the front and back as in picture

[Image: 9678008680.jpg]
[Image: 440547.jpg]
original numbers 
440547
440553

[cancunia]

The original ones will stay tighter & spread the load wider because of the larger head, they may also have different tensile strength. If you can get the originals, they would be best.