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Basic Building Set (740-1) is a Basic LEGO set released in 1985 with 530 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Basic sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 143 unique part types.
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Parts in this set
143 parts · page 1 of 3 · updating…
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Baseplate 16 x 323857 · ×1 · Light Gray -
![Battery Box, 4.5V, 4 x 24, 3 x C-Cell with Switch [Complete Assembly]](https://cdn.rebrickable.com/media/parts/ldraw/7/73264c01.png)
Battery Box, 4.5V, 4 x 24, 3 x C-Cell with Switch [Complete Assembly]4350c02 · ×1 · Light Gray -
Bracket 2 x 2 - 2 x 23956 · ×2 · Black -
Brick 1 x 13005 · ×6 · Trans-Clear -
Brick 1 x 13005 · ×8 · Red -
Brick 1 x 13005 · ×16 · Yellow -
Brick 1 x 23004 · ×16 · Yellow -
Brick 1 x 23004 · ×8 · Red -
Brick 1 x 33622 · ×12 · Yellow -
Brick 1 x 33622 · ×6 · Red -
Brick 1 x 43010 · ×6 · Red -
Brick 1 x 43010 · ×10 · Yellow -
Brick 1 x 63009 · ×12 · Yellow -
Brick 1 x 63009 · ×10 · Red -
Brick 1 x 83008 · ×4 · Yellow -
Brick 1 x 83008 · ×4 · Red -
Brick 2 x 23003 · ×5 · Yellow -
Brick 2 x 23003 · ×8 · Red -
Brick 2 x 33002 · ×4 · Red -
Brick 2 x 43001 · ×1 · Yellow -
Brick 2 x 43001 · ×5 · Red -
Brick 2 x 83007 · ×2 · Yellow -
Brick Round 1 x 1 Open Stud3062b · ×6 · Black -
Brick Round 2 x 2 with Axle Hole3941 · ×4 · Black -
Brick Special 1 x 1 with Headlight4070 · ×6 · Red -
Brick Special 1 x 1 with Headlight4070 · ×2 · Yellow -
Door 1 x 4 x 5 Train Left with Red Bottom Half Print4181pr0002 · ×1 · Yellow -
Door 1 x 4 x 5 Train Right with Red Bottom Half Print4182pr0002 · ×1 · Yellow -
Door 1 x 4 x 5 with 4 Panes, Squared Base3861b · ×1 · Red -
Door Sliding - Type 14511 · ×2 · Red -
![Electric Connector, 2 Way Male Squared Narrow Long [Complete Assembly]](https://cdn.rebrickable.com/media/parts/ldraw/7/70423.png)
Electric Connector, 2 Way Male Squared Narrow Long [Complete Assembly]766c01 · ×2 · Light Gray -
Fence Lattice 1 x 4 x 13633 · ×4 · Black -
Glass for Window 1 x 4 x 33855 · ×2 · Trans-Clear -
Glass for Window 4 x 4 x 3 Roof4448 · ×2 · Trans-Clear -
![Hinge Brick 1 x 4 [Lower]](https://cdn.rebrickable.com/media/parts/elements/383121.jpg)
Hinge Brick 1 x 4 [Lower]3831 · ×2 · Red -
![Hinge Brick 1 x 4 [Upper]](https://cdn.rebrickable.com/media/parts/elements/383021.jpg)
Hinge Brick 1 x 4 [Upper]3830 · ×2 · Red -
Hinge Plate 1 x 2 with 2 Fingers and Solid Studs4276a · ×2 · Black -
Hinge Plate 1 x 2 with 2 Fingers and Solid Studs4276a · ×2 · Yellow -
![Hinge Plate 1 x 2 with 3 Fingers [Solid Studs]](https://cdn.rebrickable.com/media/parts/ldraw/0/4275a.png)
Hinge Plate 1 x 2 with 3 Fingers [Solid Studs]4275a · ×6 · Black -
![Hinge Plate 1 x 2 with 3 Fingers [Solid Studs]](https://cdn.rebrickable.com/media/parts/ldraw/14/4275a.png)
Hinge Plate 1 x 2 with 3 Fingers [Solid Studs]4275a · ×2 · Yellow -
Hinge Plate 2 x 4 with Articulated Joint - Female3640 · ×1 · Black -
Hinge Plate 2 x 4 with Articulated Joint - Male3639 · ×1 · Black -
![Hinge Plate 2 x 5 with Large Hole [Complete Assembly]](https://cdn.rebrickable.com/media/parts/ldraw/0/3149ec01.png)
Hinge Plate 2 x 5 with Large Hole [Complete Assembly]3149bc01 · ×1 · Black -
Hinge Tile 1 x 2 1/2 with 2 Fingers on Top4531 · ×4 · Black -
Hook, Plate 1 x 2 with Crane Hook Left3127 · ×1 · Red -
Motor, Train, 4.5V 12 x 4 x 3 1/3 Type III, Open Contactsupn0259c02 · ×1 · Black -
Plate 1 x 13024 · ×1 · Trans-Green -
Plate 1 x 13024 · ×4 · Red