Source for Mounting Screws Included With EN87A?

S. Busch

Alas, I like the EN87 narrow shank couplers with the Accurail boxes on resin freight cars.  I say alas, because, since the assembled EN87A is no longer available, I don't know where I can find a source of the nice mounting screws that came with them.
Can some kind reader please suggest a source?
Thanks and regards!
Steve Busch
Duncan, SC