Seat gas strut spacer?

[onthames]

Hi. One of my seats is missing a strut on one side so am replacing.
Anyone know what this bit marked in red is? Looks like a spacer but can't find on diagrams.

from the top it looks like:

Here is side with no strut for comparison:

As you can see there is a hole for the strut but I need the nut plus that spacer thingy.

[onthames]

Bump cos I still ain't figured it out

[Brianmoooore]

Just had a look on a couple of seats in the workshop, and there's nothing there that I can see. The struts are still on the mechs., but I put a pair of pliers on the black bit you've highlighted and it appears to be a solid part of the pin (won't turn on it) . The strut sits against the shoulder of the pin, and the star washer holds it i place

[onthames]

Just had a look on a couple of seats in the workshop, and there's nothing there that I can see. The struts are still on the mechs., but I put a pair of pliers on the black bit you've highlighted and it appears to be a solid part of the pin (won't turn on it) . The strut sits against the shoulder of the pin, and the star washer holds it i place

Could you tell what holds the pin to the mech and not the shock?

[onthames]

I can loads of people selling the shock with the star washer, but I can't find the pin.
https://i.imgur.com/7B8mF7Q.png
On the vert.seat adjust area you can see the pins but on the backrest adjuster (bit I'm interested in) theres no pins

[Brianmoooore]

They appear to be just rivetted over.

[onthames]

They appear to be just rivetted over.

Looks like I'll have to make my own part for it then. Cheers for the info brian