Space Shuttle Discovery-STS-31

Notable parts

• 1 mould appears in no other set: Fact Book, Space Shuttle Discovery.
• 4 parts come in a colour no other set has for that mould: Plate Special 1 x 2 with Door Rail (Dark Gray) ×2; Technic Rotation Joint [Half-Ball 3L Thin Beam] (White) ×2; Technic Rotation Joint Disk with Pin Hole and 3L Beam Thick (White); Technic Rotation Joint Socket with 3L Thick Beam (White).
• 7 parts appear in only a few other sets: Brick Round 2 x 2 x 2 Robot Body, Axle Holder '+' Orientation (Light Gray) — also in 7191 X-wing Fighter; Hinge Plate 1 x 2 Locking with 1 Finger On End, with Groove (Dark Gray) ×8 — also in 4720 Knockturn Alley, 4101 Wild Collection; Technic Rotation Joint Disk with Pin and 3L Beam Thick (White) — also in 75335 BD-1, 60368 Arctic Explorer Ship; Flag 7 x 3 with Rod (Trans-Brown) ×4 — also in 7705 Gate Assault, 7467 International Space Station, 8107 Fight for the Golden Tower; Cylinder 3 x 6 x 2 2/3 Horizontal Hollow Studs (Light Gray) — also in 7045 Hovercraft Hideout, 7142 X-wing Fighter, 7140 X-wing Fighter; Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth (Dark Gray) ×8 — also in 10128 Train Level Crossing, 7045 Hovercraft Hideout, 4404 Land Busters, 4482 AT-TE; Technic Pin with Friction with Click Rotation Ring (Black) — also in 8593 Makuta, 10026 Special Edition Naboo Starfighter, 8012 Super Battle Droid, 8558 Cahdok and Gahdok.
• 5 moulds first came out in 2003, including in this set: Hinge Plate 1 x 2 Locking with 1 Finger On End, with Groove ×8; Hinge Plate 1 x 2 Locking with 1 Finger on Side, with Groove ×2; Dish 3 x 3 Inverted [Radar]; Technic Rotation Joint Disk with Pin and 3L Beam Thick; Technic Rotation Joint Disk with Pin Hole and 3L Beam Thick.
• 10 existing moulds first came out in their colour in 2003, including in this set: Brick Curved 1 x 3 x 2 (White) ×8; Hinge Plate 1 x 2 Locking with 2 Fingers On End, with Groove, 9 Teeth (Dark Gray) ×8; Bracket 1 x 2 - 2 x 2 (White) ×4; Brick Curved 2 x 2 with Lip, No Studs (White) ×4; Flag 7 x 3 with Rod (Trans-Brown) ×4; and 5 more.

Calculated from Rebrickable’s public set inventories, excluding sticker sheets and spare parts.