Ray,
Here's the only information I have which is about Safeway brand couplers only.
Safeway S40 Series couplers, 3000#, 3 GPM, 1/4" Body, (threads I think are Tapered Pipe Threads?)
S40-2 = complete coupler (female + male)
S45-2 = female half
S41-2 = male half
Hope this might help using a cross reference chart.
KC