In my 7368 I had a 2230 512 GB SSD, When I graded to a 2280 970 Evo. I had to move the lock down bracked back to the 2280 position. the 2230 512GB i just installed it with a screw I bought off Amazon. No Heat sinks or either?

I already have an SSD in the first slot, which indeed accepts 2280 SSD's. I want to use the second slot. This is a WWAN slot that also fits short SSD's. What I am looking for is a small bracket to fit a 2230 SSD in the WWAN slot.

So as shown in the photos below (from https://www.myfixguide.com/dell-precision-3530-disassembly/)

SSD in laptop

SSD with thermal plate in laptop

SSD with bracket

From the pictures, it appears what you have there is an mSATA with a proprietary adapter these are mostly used as a  Cache over a spinner hard drive. You might want to google mSATA and see what is available these usually are small 35 GB to 60 GB SSD's

I believe what you are looking for can be found on Amazon or eBAY,

Amazon:

https://www.amazon.com/Frame-2FFR0-Bracket-Latitude-Precision/dp/B07CWRNZRY

Or eBAY:

https://www.ebay.com/itm/New-for-Dell-Latitude-E5590-E5580-E5480-E5290-M3520-M3530-M-2-SSD-Caddy-bracket/401661782776?hash=item5d84e86af8:g:yzsAAOSwfplcNuj~&frcectupt=true

maybe I have these incorrect?

I believe that this frame is for M2 2280 and not 2230 unfortunately.

I don't think there's a diff between 3520 and 3530.

https://www.amazon.com/Deal4GO-Latitude-Precision-2FFR0-X3DN4/dp/B07P9YQWCB/ref=sr_1_fkmrnull_5?keywords=ssd+bracket+m3530&qid=1552849378&s=electronics&sr=1-5-fkmrnull

To the replies above: the links by Sfortin are indeed for an M2 2280 SSD. (2280 and 2230 refer to the size of the ssd: 22x80 or 22x30 mm.) The precision 3530 has a WWAN slot that fits 2230 SSD's. So the linked parts are too large and won't fit.

Unfortunately, I still don't know the official part number. I asked Dell support, but they couldn't help me. They refered to part 2FFR0, which still differs from the photos on myfixguide. In the end I bought a generic M2 (2280) heat sink, sawed it to size, drilled a hole in it and installed it in the laptop. The photo shows the result. There is only one screw to clamp the heat sink and SSD down, but it works. 

The heat sink I used is a Gelid M.2 Subzero (link). It comes with a thermal pad for in between the SSD and heat sink. However, the thermal pad (0.5 mm) and heat sink (3 mm) were too thick together. So at one side, I grinded the heat sink, removing the 'fins' to make it thinner. This is the metal-coloured part at the botom of the photo.

In the end, it is probably easier to buy an M.2 2242 SSD. The slot is meant for WWAN cards of 42 mm, so I suppose that such an SSD would fit directly without bracket (no guarantee though). For 2230 SSD's without official bracket: it would be easier to use a thinner heat sink, or even just a regular aluminium strip from a hardware store. In both cases, don't forget the thermal pad. But the Gelid heat sink also works when you make it to size.

Finally, as an alternative route or for people who really want to add a third SSD, see the link below. It is for a different laptop, it's not the official way and no idea if it works, but it might be interesting for some of you.

https://www.thewichitacomputerguy.com/blog/how-add-second-hard-drive-dell-latitude-5580-or-5590

Now that is very cool. You've literally pushed the state of the art. I apologize for any confusion my posts added. The information you posted will no doubt help others.I'm surprised the proper part (if it exists) hasn't been made available for other model laptops.