Universal Building Set (400-1) is a Universal Building Set LEGO set released in 1977 with 318 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Universal Building Set sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 3 minifigures and 91 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
1977 (49 years ago — may be retired)
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Catalog scale
318 parts listed · 91 inventory lines tracked
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Minifigures
3 in this set's inventory — verify completeness when buying used
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Gray era
Pre-2004 set — may use old light/dark gray instead of bluish gray
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Shipping weight (est.)
~746 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
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Market value
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Minifigures in Universal Building Set
Parts in this set
91 parts · page 1 of 2 · updating…
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Antenna with Side Spokes3144 · ×1 · Milky White -
Baseplate 24 x 32 with Rounded Corners10a · ×1 · Green -
Brick 1 x 13005 · ×4 · Blue -
Brick 1 x 13005 · ×18 · Red -
Brick 1 x 23004 · ×2 · Trans-Clear -
Brick 1 x 23004 · ×4 · Blue -
Brick 1 x 23004 · ×21 · Red -
Brick 1 x 43010 · ×2 · Trans-Clear -
Brick 1 x 43010 · ×4 · Blue -
Brick 1 x 43010 · ×10 · Red -
![Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support with Chrome Silver Car Grill Print [Embossed]](https://cdn.rebrickable.com/media/parts/photos/4/3010pb035e-4-f5e21907-c793-418d-b8d3-dfe602364394.jpg)
Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support with Chrome Silver Car Grill Print [Embossed]3010apr0003 · ×1 · Red -
![Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support with Chrome Silver Car Grill Print [Embossed]](https://cdn.rebrickable.com/media/parts/photos/1/3010pb035e-1-9d588eec-3f16-41fc-b12e-9159c3e95157.jpg)
Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support with Chrome Silver Car Grill Print [Embossed]3010apr0003 · ×1 · Blue -
Brick 1 x 63009 · ×12 · Red -
Brick 1 x 63009 · ×4 · Blue -
Brick 1 x 83008 · ×4 · Blue -
Brick 1 x 83008 · ×12 · Red -
Brick 2 x 103006 · ×2 · Red -
Brick 2 x 2 without Inside Ridges3003a · ×4 · Red -
Brick 2 x 2 without Inside Ridges3003a · ×2 · Black -
Brick 2 x 2 without Inside Ridges3003a · ×2 · Blue -
Brick 2 x 3 without Cross Supports3002a · ×2 · Red -
Brick 2 x 4 without Cross Supports3001a · ×2 · Blue -
Brick 2 x 4 without Cross Supports3001a · ×2 · Red -
Brick 2 x 83007 · ×2 · Red -
Brick Arch 1 x 43659 · ×4 · Red -
Brick Arch 1 x 8 x 23308 · ×2 · Red -
Brick Round 1 x 1 Solid Stud3062a · ×4 · Yellow -
Brick Round Corner 2 x 2 Macaroni with Stud Notch3063b · ×4 · Red -
Brick Sloped 33° 2 x 2 Double3300 · ×2 · Blue -
Brick Sloped 33° 2 x 4 Double3299 · ×4 · Blue -
Brick Sloped 33° 3 x 23298 · ×8 · Blue -
Brick Sloped 33° 3 x 43297 · ×16 · Blue -
Brick Sloped 33° 3 x 43297 · ×1 · Trans-Clear -
Brick Sloped 45° 2 x 1 without Bottom Pin3040a · ×2 · Red -
Brick Sloped 45° 2 x 23039 · ×4 · Red -
Brick Sloped 45° 2 x 23039 · ×2 · Trans-Clear -
Brick Sloped 45° 2 x 23039 · ×2 · Blue -
Brick Sloped 45° 2 x 43037 · ×4 · Blue -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/366023.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×2 · Blue -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/366021.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×8 · Red -
Brick Special 1 x 1 x 2 with Shutter Holder3581 · ×4 · Red -
![Brick Special 2 x 2 [Red Wheels for Single Tyre]](https://cdn.rebrickable.com/media/parts/ldraw/0/3137c01.png)
Brick Special 2 x 2 [Red Wheels for Single Tyre]3137c01 · ×4 · Black -
Brick Special 2 x 4 with Wheel Holder Old, Clear Bottom, Red Inside7049bc01 · ×2 · Black -
Door 1 x 2 x 3 Right, Hollow Studs, Fixed Glass33bc01 · ×2 · Yellow -
Door 1 x 3 x 4 with Glass7930 · ×2 · Yellow -
Door Frame 1 x 3 x 43579 · ×2 · Red -
Fence Lattice 1 x 4 x 13633 · ×4 · Blue -
![Forklift Mast and Carriage 2 x 2 Plate and Yellow Fork [Complete Assembly]](https://cdn.rebrickable.com/media/parts/ldraw/0/3430c02-f1.png)
Forklift Mast and Carriage 2 x 2 Plate and Yellow Fork [Complete Assembly]3430c02 · ×1 · Black