what do you call this ?

hi everyone.
do you guys know the specific name for this clamp and where I can buy some?

and also where can I buy metal inserts for sandwiched foams?

Thank you

Looks like a engine fire/fod wire standoff. Is it aero related? If so the ms number can be referenced by a vendor like “the yard” store. They carry msp of all sorts. Looks like a bleed air stand off.