$2 M5 Castle Nut 3D model by VSJP1000. Available on CGTrader with 6000 polys and 3000 vertices. Geometry: Polygon mesh. Check it out on CGHub.
STL (Stereolithography, filesize: 357 KB), OBJ (OBJ, filesize: 572 KB), 3MF (3D Manufacturing File, filesize: 92.6 KB), OTHER (Other, filesize: 1.02 MB), IGE (IGES, filesize: 1.13 MB), DAE (Collada, filesize: 688 KB), STP (STEP, filesize: 1.08 MB)