On page 101 of Green Bible it says: 01T-3600A Wheel assy (steering) Trucks except 122", 1940-47. BOB DRAKE catalog (circa 1970's) listed his 1940 Standard Steering Wheel as 01A-3600 STD for 1940 Standard Passenger Car & 1940-47 Pickup. I am thinking that the 1940 Standard Pass car Steering wheel is the same one used on the 1940 1/2 ton pick up.
It cost $3.50 in 1940.