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Hollywood U-Build-It Construction Sets

Hollywood U-Build-It is a simple Meccano-like construction system. An identifying feature are the two small holes in the strips between the normal holes. It was made in the USA from (possibly) the 1930s to the late 1940s.

Manufacturer / Distributor

F.K. Haas, Hollywood, California

Info from the Metal Constructional Systems Database for HOLLYWOOD U-BUILD-IT

System Type
Hole pitch <12.7mm
after World War Two (see comment *1)
Aluminium (Alloy)
6-32 (probably)
Boss Type
no boss
Boss Thread
Diametrical Pitch of Gears
No. of Parts in System
Hole Pitch (Spacing) (mm)
11.1 (see comment *2)
Diameter of holes in Strips(mm)
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
Types of Nuts and Bolts
Material/Finish of Nuts and Bolts
Size of the Nuts across Flats (mm)
Bolt diameter (mm)

Strips have two 1/8" holes across the strip between each pair of main holes. *1 1930s also mentioned. *2 Exactly 7/16"; & multiples. See also CONSTRUCTO [6].

The MCS document for this system is shown below. It can also be downloaded to your computer if desired here

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There are currently no manuals, leaflets or photos etc. available for downloading. If you can supply any, please get in contact with me.