B-42-02-02 - 1/8" x 1/8"
B-42-03-03 - 3/16" x 3/16"
B-42-04-04 - 1/4" x 1/4"
B-42-05-05 - 5/16" x 5/16"
B-42-06-04 - 3/8" x 1/4"
B-42-06-05 - 3/8" x 5/16"
B-42-06-06 - 3/8" x 3/8"
B-42-08-08 - 1/2" x 1/2"
B-42-10-10 - 5/8" x 5/8"
B-42-12-12 - 3/4" x 3/4"
B-42-14-14 - 7/8" x 7/8"

This brass hydraulic SAE 45° fitting is equivalent to the following:
-Eaton Weatherhead 42