Dome nut. It's Solidworks(SLDPRT) model was exported in other CAD formats:(X_T, IGES, STEP, OBJ and STL). This 3D model can used in producing on CNC machines and for 3D printing.
STL (Stereolithography, filesize: 1.17 MB), OBJ (OBJ, filesize: 2.49 MB), IGE (IGES, filesize: 346 KB), SLDPRT (SolidWorks, filesize: 570 KB)