This is an old revision of the document!
Here are the nuts and bolts that you'll need to build the basic robot. All of these are metric M-2 sized.
Robotis S1 Screw (~5mm) x16
Robotis N1 Nut x45
Robotis S-B Screw (~9mm) x8
Robotis N2 Nut x8
Robotis S3 Screw (~12mm) x32
Robotis S4 Screw x (~14mm) x13
Robotis S6 Screw (~22mm) x 4