trailing arm through bolts need washers??

[535is-pa]

so i have a crazy pile of hardware 2 cars rear suspension hardware and huge pile of other junk. i just dont rember what goes where. realoem.com shows the trailing arm bushing through bolt without washers. but it seems that it should have them. i had theise bolts loosen up on me when i swaped in my non abs trailing arms last month, i just want to make shur that dosnt happen again.



bently specs theise bolts torque at like 49 or 127 lbs?? its kinda vague. saying like trailing arm link or something.

[Blue Shadow]

max's site shows no washer either so no washer, unless you want to use up some of your extra parts. the center of the bushing is a steel cylinder so no compression of the rubber or whatever you would think would need a washer.