International 20 Industrial
McCormick-Deering 20 Industrial (International 20 Industrial is identical)
Model history
Model introduced 1936
Model discontinued 1940
Model status Discontinued
No. produced 686
Preceded by McCormick-Deering 20 Industrial
Superseded by International I-4
Engine Specification
Engine make International
Fuel type gasoline
Power hp 30 belt, 23 drawbar
Governed rpm 1000
Displacement cu in /(litre) 284 ci
No. of Cylinders 4
Bore in (mm) 4.25 in
Stroke in (mm) 5 in
Cooling system Water
Naturally aspirated, Turbo or Supercharged NA
Transmission Details
Transmission type sliding gear
Gearbox make International
Forward 4
Reverse 1
Drive 2-WD
Linkage Category Unknown
Tyre Sizes (std/options)
Front pneumatic (solid rubber 29"x5" standard)
Rear pneumatic 36x6 dual rear (solid rubber 40"x10" standard)
Tractor Dimensions
Length (inches/metres) 118 in
Width (inches/meters) 65 in
Height (inches/meters) 62 in
Weight (nominal) lb/kg 7400 lb
Turning circle (nominal) inches/meters 28 ft
Wheelbase 78 in
Other info
Factories Tractor Works, Chicago, Illinois, USA
Plow rating
Nebraska Tests No. 194
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The International 20 Industrial was built by International Harvester from 1936 to 1940 in the Chicago, Illinois, USA Tractor Works factory.

Model HistoryEdit

International Harvester began building the McCormick-Deering 10-20 Industrial in 1923. The first tractors built were the same as the agricultural 10-20s except for cast iron disk wheels. In 1924 a coil-spring front suspension was added, along with rear-wheel brakes, a high-back seat, and a foot accelerator. In 1925 the front suspension was changed to one with transverse leaf springs. Also the tractor was given a high-speed high gear (over 10 mph). Somewhere during this time the 10-20 became the McCormick-Deering 20 Industrial, or Model 20. In 1936 the name was changed to International 20 Industrial. About this time a 4-speed transmission replaced the original 3-speed and pneumatic tires were popular options.

Timeline Edit

Factory locations Edit

  • International Harvester Tractor Works, Chicago, Illinois, USA


See infobox for basic details

Variations and Options Edit

pneumatic tires, dual rear tires

Serial Numbers Information Edit

Year Serial run Number Built[1] Notes (Total built 686).
1936 195
1937 212
1938 120
1939 127
1940 32

Preserved tractorsEdit

Gallery Edit

Add extra photos here please.

See alsoEdit


  1. Klancher, Lee 1996. International Harvester Photographic History, Motorbooks International, Osceola, Wisconsin, p.34

External linksEdit

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