This Turnlock part HSTHGF3036S is a flat grommet to install the stud in the panel and holds the stud in place. Important is that since this grommet will swage 90 degrees, you'll need a protection ring to protect the panel:
turnlock HSTHPRS
Material
Stainless steel
Type
Grommet Flat
Headstyle
Flat Grommet
Anemo can offer you the Grommet Flat with Certificate of Quality, Certificate of Conformity and Certificate of Origin on request. Anemo is offering Grommet Flat as factory new.