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what is the fastener that goes in these holes?
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djacobow:

I am designing a battery-operating thingy and am using this PCB-mount battery holder from Keystone:

https://www.keyelco.com/product.cfm/product_id/1033

This is a TH part with holes in it for, presumably a rivet of some kind. The question I have: what sort of rivet would I use? Can I get them and a tool to place them for < $100?

They have an SMT battery holder, too. It costs a lot more and has a larger fooprint, which is a problem for me. I'd prefer to figure out how to make use of those holes if I could.

MLXXXp:
Are the battery holder holes countersunk? If so, I found that some small flat head screws worked for a similar holder.

https://www.mlxxxp.ca/electronics/intervalometer/
djacobow:
These particular holders have three holes diagonally from one corner to the other. The center one is countersunk, the others are not.

But I don't know what I would screw into. This is a PCB mount component and it's going on a PCB. My PCB has matching holes as per the datasheet, I just put of figuring out how I would use them. To-date I have been using hold melt glue + the pins to hold the component in place.
TimNJ:
I'm not sure exactly...

My first thought is something like this: http://www.essentracomponents.com/en-us/fasteners/rivets/push-in-rivets/push-in-rivets-snap/sr-3550w

Doesn't look like it's countersunk and the proximity of the hole to side-wall makes fitting anything there seem a bit challenging.

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How about using this holder: https://www.digikey.com/product-detail/en/mpd-memory-protection-devices/BC2AAAPC/BC2AAAPC-ND/2439242

The mounting holes are on the center line, and look like they could accommodate an M2.5 screw.

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Or use 4 of these: https://www.digikey.com/product-detail/en/mpd-memory-protection-devices/BK-82/BK-82-ND/2079903


floobydust:
Stimpson GS-3 eyelets are typically used.

I would get samples and see if the battery holder is actually practical. Many of them out there are stupid like this Keystone part.
1/2" long pins? mysterious center hole? If Keystone was smart they would put a hook for a PCB slot and then no fasteners needed. Or add a third pin at the other end.

The mounting holes are to the side of each cell so the fasteners could have thickness, but the center rib is there  :palm:

The MPD devices are better thought out, the center rib is out of the way of any fasteners (screw heads). They suggest 2-56 or GS-3.

There is a lot of manufacturing labour to hand-install screws, lockwashers etc.
Consider using two single battery holders, they solder in.
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