3D models of a screw and a plastic dowel. High-detailed quad-based topology of the meshes can be used with subdivision surface modifier to increase level of details of the models.
Modeled and rendered via Blender 2.78 / Cycles. Native BLEND file contains lighting and render setups in Cycles mode, and also node shaders / materials (only in BLEND file!) as shown at #1-2 thumbnail/turntable images.
OBJ and FBX formats are exported from Blender and submitted as a meshes/objects as shown on #3-6 turntables.