I feel like I got these in a sparkfun kit a long time ago. They’re useful because stacking headers are often a bit too long by exactly the height of this plastic bit.
What is this part called?
https://i.imgur.com/MzMOcSI.jpg
It looks like they’re called “Header spacers” https://www.littlebird.com.au/products/ … n-straight
…though searching/shopping for those alone doesn’t bring up many results…this might get you started!
been trying “housing” or “spacer” but I can’t find anything
I don’t know that anyone sells just the spacer portion, you will probably need to purchase some regular straight headers and pull the pins out to make a spacer.