Hey Chilidawg!
I found something on the vast internet on those hardware items.
"For the 2012 and newer JK's you need the following hardware when you install either OEM rubi rock rails of OEM side steps:
1) 8mm 1.25 pitch 30mm length Grade 9 hardened hex head bolts
(you need 4 of these for the 2dr) Also need washers/lock washers
2) 6mm x 1.0 pitch Nylock nuts
(you need 8 of these for the 2dr.) Also need washers
Note: With 2012 and newer JK's you do not use "U-nuts". They are not required.
Also, 30mm length as mentioned above is just a little less then 1.25 inches in length."
(4) M8x1.25x30mm body bolts
(2) M8x1.25 u-nuts
(8) M6x1.0 washered nuts