The collection of 21 bolts and screws was made in Blender 4.1

Render 1200x600 px jpeg (Cycles)

Transformations has been reset and model is placed at scene origin [0, 0, 0 XYZ].

Textures PBR metal-rough 2048x2048 png

• base color
• roughness
• heigh
• normal
• metallic

Models are not triangulated and consist mainly of quadrilaterals (the number of triangles is minimized, but due to the geometry of the thread, it is not possible to completely abandon them).

Each model has a ready-made UV-map without overlap

Bolts and screws (sizes and number of polygons/vertices)

• allen bolt (diameter 0.153 m, height 0.4 m / 4898 polygons and 4860 vertices)
• elevator bolt 1 (diameter 0.188 m, height 0.5 m / 4367 polygons and 4341 vertices)
• elevator bolt 2 (diameter 0.183 m, height 0.2 m / 5475 polygons and 5447 vertices)
• eye bolt (diameter 0.316 m, height 0.5 m / 4418 polygons and 4375 vertices)
• hanger bolt (diameter 0.045 m, height 0.5 m / 8497 polygons and 8459 vertices)
• hex bolt 1 (diameter 0.212 m, height 0.5 m / 5663 polygons and 5637 vertices)
• hex bolt 2 (diameter 0.157 m, height 0.5 m / 4988 polygons and 4980 vertices)
• hexagonal socket set screw (diameter 0.07 m, height 0.25 m / 3800 polygons and 3756 vertices)
• hook bolt (diameter 0.169 m, height 0.5 m / 9110 polygons and 9072 vertices)
• knob bolt (diameter 0.314 m, height 0.5 m / 4993 polygons and 4992 vertices)
• mashine screw 1 (diameter 0.166 m, height 0.5 m / 5591 polygons and 5559 vertices)
• mashine screw 2 (diameter 0.16 m, height 0.5 m / 5841 polygons and 5837 vertices)
• sex bolt (diameter 0.113 m, height 0.2 m / 5404 polygons and 5397 vertices)
• slotted set screw (diameter 0.07 m, height 0.2 m / 3129 polygons and 3108 vertices)
• socket screw (diameter 0.159 m, height 0.4 m / 4347 polygons and 4322 vertices)
• square head bolt (diameter 0.18 m, height 0.5 m / 4070 polygons and 4032 vertices)
• thumb screw (diameter 0.22 m, height 0.5 m / 4719 polygons and 4681 vertices)
• u bolt (width 0.376 m, height 0.5 m / 8572 polygons and 8530 vertices)
• wing bolt (diameter 0.33 m, height 0.5 m / 5002 polygons and 4964 vertices)
• wood screw 1 (diameter 0.104 m, height 0.4 m / 2305 polygons and 2256 vertices)
• wood screw 2 (diameter 0.1 m, height 0.4 m / 3089 polygons and 3050 vertices)

Formats:

• blend
• fbx 
• obj