Check out Bolts bolt and nut Low-poly 3D model 14 3D model on CGTrader for $9. High-quality mesh by icekazim: 296 polys, 150 vertices. PBR, Textured, UV Mapped.
OBJ (OBJ, filesize: 4.35 MB), BLEND (Blender, filesize: 4.35 MB), FBX (Autodesk FBX, filesize: 4.35 MB)