a 1 ton AD will have 8 lugs.
as far as wheel size, If Single wheel then 17" is the usual size, and if dual then 18 is the normal.

For replacement wheels for a 4400 you should look at an AD 1.5 or 2 ton. These will be lock ring type 20" if stock. Be sure to check the center hole diameter before you buy. The earlier wheels have 4.75" and later have 5.25". I am guessing you have the 4.75"?

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-