The 3BSM requires a handful of different types of bearings and fasteners, so this hardware pack offers a convenient way to get your model assembled. This hardware pack supports the 90mm version - hardware for the 70mm 3BSM is included within the 70mm F-35B hardware pack.
 
Includes:
2 x 5 x 2.5mm bearings (x50)
M2 x 5 flat-head screws (x50)
#2 x 3/16" self-tapping screws (x30)
#2 x 5/16" self-tapping screws (x6) 
#2 flat washers (x6)
#M3 x 6mm cap screws (x4)