G3/8" Thermochill Question

[neomorpheus]

I was wondering if anyone could tell me if:

Nickel Plated Intake Extension Screw for Eheim 1046/1048 Pumps
http://www.sharkacomputers.com/ininexscfore.html

would work in the G3/8" fitting thread of a Thermochill PA120.3 radiator?

I am having a hell of a time getting fittings for this radiator because everyone seems to be sold out of them.