The answer is "no" and "maybe".
The wide front for the C through 230 are the same, or close enough for all practical purposes. It has a wish-bone support that is integral with the axle center section and pivots on the same pin as the axle. The 240 wish bone is a separate part and pivots in a ball socket under the bell housing. A 240 axle wouldn't be good on the earlier tractors. The bolster is a different part number on the 240 than the other models as well, so I don't know if the earlier axle will work on a 240 or not.
This is all relative to the Farmall 240. A 240 Utility is another beast completely.