I know the 410s i have is the same as my 6906 but want to swap my 410S one with a Stainless one.
I Can get one from a 4013tsw parts gun but wonder if it will be to short long or the same if put in the 410 thanks.

I might suggest calling your local gunsmith who should know the answer on the phone or check with some of the larger parts dealers like Brownells to see if they shoow the length of them and if they they have them in stock as well.

410S has a 4 inch barrel and guide rod.
6906 and 4013TSW both have 3.5 inch barrels and guide rods.
Not interchangeable.
If you are looking for a stainless steel guide rod to replace the plastic part in your 410S, then you need to look for one from the 4 inch barreled models like 5906, 4006, 4043, etc.

John

Thanks Sorry I put the wrong # in should have asked if any 4" one would work.
I have other S&W 3rd gens and have looked them over in the past and even looked them over again before posting the thread
I had pulled the 5906 I have and put it in the 410 and it looked to be the same. That is with the exception of the one in the 410 having a 2 step pin in it that none of my other guide rods have.
All my other 3rd ends have the guide rods that sit on the slide but the 410 one has a smaller part on the pin that stands it off. What the purpose to that is I have no idea. Yes i Know it compresses

To be more plain the ones from both my 5906 works as well as the one from my 4006 But both have a 1 step pin does it need to be a 2 step like came out?

The pin makes no difference.
When installed in the pistol with the recoil spring in place, all guide rod flanges press tightly against the frame while the plunger (pin) prevents the slide stop from walking out the left side.

John

Ok thanks as i could see no propose for the pin being that way on the rod other than to maybe be aid in assembly or something.