Hey guys, recently got a spoon xbrace and saner bar. Neither came with mounting hardware. I've done some searching on here and that brought me to a metric hardware supplier in Cali(metric specialties.com). I gave them a call and it seems they do not carry exactly what I need. For those type of loads my understanding is that I need grade 8 bolts or higher also being that they are so low on the car these bolts should be stainless. This place either has stainless or the hardness I need, any advice would be great! Here are the specs-
Saner swaybar hex bolts- m10x1.25 by about 1" long
Spoon xbrace allen(socket) head bolts- m10x1.25 by 35mm long

 

In my opinion you do not need stainless.
Just Grade 8.