Hot Rods Need some help with spindle id

Found these spindles in a box at the shop. Don't remember where I got them or what they are out off. Maybe someone can help me ID them. I'm hoping they are '42-'48, don't know if in fact they may be '36 on down. I set them next to a '37-'41 spindle and the shaft seems to be the same length from the tip of the thread end to the radius where the bearing seats. Don't have any '42-'48 to compare them.
The width on the flat sides is about 1/16" less than 4 7/8". The height on the round ends is about 4 3/4" high. The shaft is about 5" long from the thread end to the radius where the bearing seats.

Thanks for any help you can give me. Joe.

 

The 5" measurement in your fifth photo shows that they are 1936 spindles, the '35's are longer by 1/4" IIRC.

 

x 2

 

Guess that's why they have been hanging around and were never used. Thanks for the reply. Joe