Free Fastener and Hardware CAD Models (STEP)

Metric and UNC screws, bolts, nuts, washers, threaded inserts, retaining rings, pins and bearings, as exact STEP solids at nominal size. Every file here is public domain: open it in your browser, then download it and use it for anything.

3342 3D parts · STEP, STL, SketchUp, 3MF, OBJ, glTF, IFC, Rhino and more · public domain

All 3342 Furniture & interiors 862 People & figures 311 Mechanical 305 Architecture & BIM 284 Electronics & PCB 248 Art & decor 220 Lighting 207 Fasteners & hardware 188 Tools & jigs 158 Vehicles 148 Nature & terrain 105 Floor plans & site plans 6 Other 359

All fasteners & hardware Screws & bolts 58 Nuts 33 Bearings 18 Retaining rings & pins 18 Washers 16 Extrusion & framing 15 Hinges, slides & casters 15 Shaft collars 6 Threaded inserts 5 Springs 4

SizeAny M2 3 M2.5 2 M3 6 M4 7 M5 10 M6 13 M8 13 M10 10 M12 11 M14 2 M16 3 M18 2 M20 3 #4-40 3 #6-32 3 #8-32 3 #10-24 3 #12-24 3 1/4-20 3 5/16-18 3 3/8-16 3 7/16-14 3 1/2-13 3 608 1 625 1 6000 1 6001 1 6002 1 6003 1 6004 1 6005 1 6200 1 6201 1 6202 1 6203 1 6204 1 6205 1 UCP204 1 UCF204 1 UCP205 1 UCF205 1 20 x 20 2 20 x 40 2 40 x 40 2 41 x 41 3 50 x 47 1

188 3D parts in Fasteners & hardware · Clear all

stepM8Rotate in 3D
Plain flange nut M8
Plain flange nut M8, modeled from published dimensions. Overall 17.9 x 17.9 x 8 mm. Key dimensions: thread diameter 8 mm; pitch 1.3 mm; across flats 13 mm; height 8 mm; flange diameter 17.9 mm; flange edge thickness 1.2 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. DIN 6923 plain flange; no serrations. Flange transition and chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
454 KBDetails & download
stepM6Rotate in 3D
Plain flange nut M6
Plain flange nut M6, modeled from published dimensions. Overall 14.2 x 14.2 x 6 mm. Key dimensions: thread diameter 6 mm; pitch 1 mm; across flats 10 mm; height 6 mm; flange diameter 14.2 mm; flange edge thickness 1.1 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. DIN 6923 plain flange; no serrations. Flange transition and chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
448 KBDetails & download
stepM5Rotate in 3D
Plain flange nut M5
Plain flange nut M5, modeled from published dimensions. Overall 11.8 x 11.8 x 5 mm. Key dimensions: thread diameter 5 mm; pitch 0.8 mm; across flats 8 mm; height 5 mm; flange diameter 11.8 mm; flange edge thickness 1 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. DIN 6923 plain flange; no serrations. Flange transition and chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
434 KBDetails & download
stepM12Rotate in 3D
Plain flange nut M12
Plain flange nut M12, modeled from published dimensions. Overall 26 x 26 x 12 mm. Key dimensions: thread diameter 12 mm; pitch 1.8 mm; across flats 18 mm; height 12 mm; flange diameter 26 mm; flange edge thickness 1.8 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. DIN 6923 plain flange; no serrations. Flange transition and chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
458 KBDetails & download
stepM10Rotate in 3D
Plain flange nut M10
Plain flange nut M10, modeled from published dimensions. Overall 21.8 x 21.8 x 10 mm. Key dimensions: thread diameter 10 mm; pitch 1.5 mm; across flats 15 mm; height 10 mm; flange diameter 21.8 mm; flange edge thickness 1.5 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. DIN 6923 plain flange; no serrations. Flange transition and chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
479 KBDetails & download
stepM8Rotate in 3D
Hex nut M8
Hex nut M8, modeled from published dimensions. Overall 15 x 13 x 6.8 mm. Key dimensions: thread diameter 8 mm; pitch 1.3 mm; across flats 13 mm; height 6.8 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Outside dimensions use ISO 4032:2023 maximum nut height and nominal across-flats values; turned chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
401 KBDetails & download
stepM6Rotate in 3D
Hex nut M6
Hex nut M6, modeled from published dimensions. Overall 11.5 x 10 x 5.2 mm. Key dimensions: thread diameter 6 mm; pitch 1 mm; across flats 10 mm; height 5.2 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Outside dimensions use ISO 4032:2023 maximum nut height and nominal across-flats values; turned chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
392 KBDetails & download
stepM5Rotate in 3D
Hex nut M5
Hex nut M5, modeled from published dimensions. Overall 9.2 x 8 x 4.7 mm. Key dimensions: thread diameter 5 mm; pitch 0.8 mm; across flats 8 mm; height 4.7 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Outside dimensions use ISO 4032:2023 maximum nut height and nominal across-flats values; turned chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
372 KBDetails & download
stepM20Rotate in 3D
Hex nut M20
Hex nut M20, modeled from published dimensions. Overall 34.6 x 30 x 18 mm. Key dimensions: thread diameter 20 mm; pitch 2.5 mm; across flats 30 mm; height 18 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Outside dimensions use ISO 4032:2023 maximum nut height and nominal across-flats values; turned chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
505 KBDetails & download
stepM18Rotate in 3D
Hex nut M18
Hex nut M18, modeled from published dimensions. Overall 31.2 x 27 x 15.8 mm. Key dimensions: thread diameter 18 mm; pitch 2.5 mm; across flats 27 mm; height 15.8 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Outside dimensions use ISO 4032:2023 maximum nut height and nominal across-flats values; turned chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
453 KBDetails & download
stepM16Rotate in 3D
Hex nut M16
Hex nut M16, modeled from published dimensions. Overall 27.7 x 24 x 14.8 mm. Key dimensions: thread diameter 16 mm; pitch 2 mm; across flats 24 mm; height 14.8 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Outside dimensions use ISO 4032:2023 maximum nut height and nominal across-flats values; turned chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
479 KBDetails & download
stepM14Rotate in 3D
Hex nut M14
Hex nut M14, modeled from published dimensions. Overall 24.2 x 21 x 12.8 mm. Key dimensions: thread diameter 14 mm; pitch 2 mm; across flats 21 mm; height 12.8 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Outside dimensions use ISO 4032:2023 maximum nut height and nominal across-flats values; turned chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
445 KBDetails & download
stepM12Rotate in 3D
Hex nut M12
Hex nut M12, modeled from published dimensions. Overall 20.8 x 18 x 10.8 mm. Key dimensions: thread diameter 12 mm; pitch 1.8 mm; across flats 18 mm; height 10.8 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Outside dimensions use ISO 4032:2023 maximum nut height and nominal across-flats values; turned chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
423 KBDetails & download
stepM10Rotate in 3D
Hex nut M10
Hex nut M10, modeled from published dimensions. Overall 18.5 x 16 x 8.4 mm. Key dimensions: thread diameter 10 mm; pitch 1.5 mm; across flats 16 mm; height 8.4 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Outside dimensions use ISO 4032:2023 maximum nut height and nominal across-flats values; turned chamfers are representative. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
422 KBDetails & download
stepM8Rotate in 3D
Hex bolt M8 x 16
Hex bolt M8 x 16, modeled from published dimensions. Overall 15 x 13 x 21.3 mm. Key dimensions: thread diameter 8 mm; pitch 1.3 mm; length under head 16 mm; head across flats 13 mm; head height 5.3 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. ISO 4017 head dimensions; the M10, M12 and M14 spanner sizes follow ISO rather than the older DIN dimensions. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
629 KBDetails & download
stepM6Rotate in 3D
Hex bolt M6 x 12
Hex bolt M6 x 12, modeled from published dimensions. Overall 11.5 x 10 x 16 mm. Key dimensions: thread diameter 6 mm; pitch 1 mm; length under head 12 mm; head across flats 10 mm; head height 4 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. ISO 4017 head dimensions; the M10, M12 and M14 spanner sizes follow ISO rather than the older DIN dimensions. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
598 KBDetails & download
stepM5Rotate in 3D
Hex bolt M5 x 12
Hex bolt M5 x 12, modeled from published dimensions. Overall 9.2 x 8 x 15.5 mm. Key dimensions: thread diameter 5 mm; pitch 0.8 mm; length under head 12 mm; head across flats 8 mm; head height 3.5 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. ISO 4017 head dimensions; the M10, M12 and M14 spanner sizes follow ISO rather than the older DIN dimensions. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
647 KBDetails & download
stepM20Rotate in 3D
Hex bolt M20 x 40
Hex bolt M20 x 40, modeled from published dimensions. Overall 34.6 x 30 x 52.5 mm. Key dimensions: thread diameter 20 mm; pitch 2.5 mm; length under head 40 mm; head across flats 30 mm; head height 12.5 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. ISO 4017 head dimensions; the M10, M12 and M14 spanner sizes follow ISO rather than the older DIN dimensions. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
767 KBDetails & download
stepM18Rotate in 3D
Hex bolt M18 x 35
Hex bolt M18 x 35, modeled from published dimensions. Overall 31.2 x 27 x 46.5 mm. Key dimensions: thread diameter 18 mm; pitch 2.5 mm; length under head 35 mm; head across flats 27 mm; head height 11.5 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. ISO 4017 head dimensions; the M10, M12 and M14 spanner sizes follow ISO rather than the older DIN dimensions. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
722 KBDetails & download
stepM16Rotate in 3D
Hex bolt M16 x 32
Hex bolt M16 x 32, modeled from published dimensions. Overall 27.7 x 24 x 42 mm. Key dimensions: thread diameter 16 mm; pitch 2 mm; length under head 32 mm; head across flats 24 mm; head height 10 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. ISO 4017 head dimensions; the M10, M12 and M14 spanner sizes follow ISO rather than the older DIN dimensions. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
754 KBDetails & download
stepM14Rotate in 3D
Hex bolt M14 x 30
Hex bolt M14 x 30, modeled from published dimensions. Overall 24.2 x 21 x 38.8 mm. Key dimensions: thread diameter 14 mm; pitch 2 mm; length under head 30 mm; head across flats 21 mm; head height 8.8 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. ISO 4017 head dimensions; the M10, M12 and M14 spanner sizes follow ISO rather than the older DIN dimensions. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
724 KBDetails & download
stepM12Rotate in 3D
Hex bolt M12 x 25
Hex bolt M12 x 25, modeled from published dimensions. Overall 20.8 x 18 x 32.5 mm. Key dimensions: thread diameter 12 mm; pitch 1.8 mm; length under head 25 mm; head across flats 18 mm; head height 7.5 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. ISO 4017 head dimensions; the M10, M12 and M14 spanner sizes follow ISO rather than the older DIN dimensions. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
678 KBDetails & download
stepM10Rotate in 3D
Hex bolt M10 x 20
Hex bolt M10 x 20, modeled from published dimensions. Overall 18.5 x 16 x 26.4 mm. Key dimensions: thread diameter 10 mm; pitch 1.5 mm; length under head 20 mm; head across flats 16 mm; head height 6.4 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. ISO 4017 head dimensions; the M10, M12 and M14 spanner sizes follow ISO rather than the older DIN dimensions. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
649 KBDetails & download
stepM8Rotate in 3D
Countersunk screw M8 x 20
Countersunk screw M8 x 20, modeled from published dimensions. Overall 16.4 x 16.4 x 20 mm. Key dimensions: thread diameter 8 mm; pitch 1.3 mm; length including head 20 mm; head actual diameter 16.4 mm; head reference height 5 mm; cone included angle degrees 90; socket across flats 5 mm; socket depth 2.9 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Overall screw length includes the countersunk head. Actual maximum head diameter is used; the rounded head rim is simplified to a short cylindrical band above a 90-degree cone. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
606 KBDetails & download

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