I need Model train buffs help.

[Dan/Panther]

I bought a bunch of Marx train stuff, and in a bag was the items in the photo.
I've just recently gotten back into my train collection, mostly Marx 50's stuff. I think I know a couple of these but not sure.

These are my guesses.
2-Cover or door, from a boxcar.
3-light Shroud
5-Part for Decoupler.
6-part of coupler.

D/P

[McHeath]

I'm at a loss, and I showed my son the pic but he was lost as well.  His stuff is modern made.

[benhutcherson]

1 is a Lionel track clip for standard O track

2 I'm not sure about. I don't think it's a box car door, but then I don't know a huge amount about Marx(I'm a Lionel and American Flyer guy).

3 I'm also not sure about

4 is an insulated track pin

5 I've also not seen before. It looks like a tie for tubular track, however I'm not sure what the fitting on the center is for. It almost looks to me it's designed to hold a piece of wire that would serve as the center rail. I don't think Marx made anything like this, and Lionel certainly didn't.

Are the two outer notches 1 1/4"(about) apart?

6 looks to me like a drawbar that would connect a locomotive to a tender.

[Dan/Panther]

Thanks Ben, and Heath, Ben, I think you're about on track, no pun in tender...
D/P