Yes, I have 1x19 wire, I have no documentation on the actual fittings, I did find a set of spare cones on board which include instructions suggesting these fittings (or the cones at least) are meant for 1x19 wire.
I am not located somewhere that access to a qualified rigger is possible (I am in Bocas del Toro Panama) and asking the armchair sailor know it alls on various internet forums yields the usual uninformed (yet still know it all) results. So I am very appreciative of you taking a moment to respond Brion!
I attached a photo of one of the fittings if that is at all helpful. The stainless appears to be 316.
