my opinion on suspension stuff, if unable to use normal nuts with lock washers, is to use the "deformed" style nut, or castle nuts and cotter pins. i usually have to resort to drilling grade 8 bolts for the pin [if used with castle nuts] as well as cutting off of excess thread after i obtain a bolt with the suitable shank length. [no matter which nut is used] i don't like to use a bolt with too short of a shank that lets threads in the pivot area. i realize that those "deformed" style of nuts ruin the bolt threads, but i would rather replace the nuts and bolts during routine maintenance than have them come loose at an unfortunate time. just my opinion and what i feel comfortable with. what i really don't like to see on suspension fasteners is stainless bolts with polished heads. number one, if the head is polished, how do you REALLY know what grade it is, and number two, is the galling tendency stainless has without using something on the threads to prevent that from happening. and even if you use loctite or anti-seize [some even suggest using pepto bismal], there is still a nagging feeling i get that even though it feels tight, did it gall at the proper tightness, or will it gall upon removal and create a real problem removing the fastener[s] ? again, just me.