High resolution renders and additional images:
https://disk.yandex.ru/d/I5Om2JaM3GlRbg 

* The collection contains 25 variants of various screws and self-tapping screws with a threaded part.
* 5 material options.
* Materials customized for Corona and Vray. Images were rendered in Corona Render. For VRay, materials are carefully redesigned for maximum similarity.
* Materials are based on CoronaTriplanar and VRayTriplanarTex, i.e. objects for them do not require unfolding and, accordingly, do not contain it.
* Low-poly mesh models for anti-aliasing.
* The archive includes low-poly models and low-poly models with additional edges for mesh smoothing.
* The TurboSmooth modifier (mesh smoothing) is assigned to objects via Instance - turn it on / off on one object, and the changes will affect all objects.
* Topology of the grid of objects: squares, triangles (triangles are used in the rarest cases).
* Each material has its own name.
* Each object has its own logical name.

MESH DENSITY OF MODELS for all objects without smoothing (25 objects):
low-poly:
- Polygons: 18,476.
- Vertices: 18,274.

Grid for anti-aliasing:
- Polygons: 36,751.
- Vertices: 36,574.

FORMATS:
- 3ds Max 2015 (Corona)
- 3ds Max 2012 (Corona)
- 3ds Max 2015 (Vray)
- 3ds Max 2012 (Vray)
- FBX (Corona)
- FBX (VRay)
-OBJ
- 3DS
- mat (material library - Corona, Vray)