McCormick-Deering 10-20 NT 1926.jpg
McCormick-Deering 10-20 Narrow Tread, 1926, at a California auction
Model history
Model introduced 1926
Model discontinued 1934
Model status Discontinued
No. produced 1,460
Engine Specification
Engine make International
Fuel type kerosene
Power hp 25 belt, 16 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 3
Reverse 1
Drive 2-WD
Linkage Category Unknown
Tyre Sizes (std/options)
Front steel 30"x4.5"
Rear steel 42"x12"
Tractor Dimensions
Length (inches/metres) 123 in
Width (inches/meters) 48 in
Height (inches/meters) 62 in
Weight (nominal) lb/kg 3700 lb
Turning circle (nominal) inches/meters 29 ft
Wheelbase 78 in
Other info
Factories Tractor Works, Chicago, Illinois, USA
Plow rating 2
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The McCormick-Deering 10-20 Narrow Tread was built by International Harvester from 1926 to 1934 in the Chicago, Illinois, USA Tractor Works factory.

Model History

Eight of the McCormick-Deering 10-20 KC-series tractors were built in narrow tread configuration for work in closely planted orchards or vineyards in 1925. In 1926 this design turned into a separate NC-series of narrow tread tractors that were about a foot narrower than the regular 10-20.


  • 1923: McCormick-Deering 10-20 introduced
  • 1926: Narrow Tread model added
  • 1928: Engine rpm increased
  • 1935: Narrow Tread production included with regular 10-20 serial number range with NT suffix

Factory locations

  • International Harvester Tractor Works, Chicago, Illinois, USA


See Infobox for basic details

Variations and Options

  • Optional disk front wheels with high skid rings
  • Optional rubber tires - 6.00-16 or 6.50-16 front, 11.25-24 rear - 1934

Serial Numbers Information

Year Serial run[1] Number Built Notes (Total built 1,460).
1926 NC501-648 148
1927 NC649-831 183
1928 NC832-1154 323
1929 NC1155-1542 388
1930 NC1543-1749 207
1931 NC1750-1832 83
1932 NC1833-1911 79
1933 NC1912-1951 40
1934 NC1952-1961 9

Preserved tractors


Add extra photos here please.

See also


  1. Wendel, C. H. 1981. 150 Years of International Harvester, Crestline Publishing Co., Sarasota, Florida. (serial numbers p.411)

External links

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