Free STEP Models

STEP solid models, which open in SolidWorks, Fusion, Inventor, FreeCAD and every other CAD system. Every file here is public domain: open it in your browser, then download it or export it to another format.

3543 3D parts · STEP, STL, SketchUp, 3MF, OBJ, glTF, IFC, Rhino and more · public domain

Features:Real-world scale 715Assembly 463Low-poly 57CAD solid 715

715 3D parts as STEP · Clear all

  • Hex bolt #12-24 UNCstep#12-24Rotate in 3D
    Hex bolt #12-24 UNC

    Hex bolt #12-24 UNC, modeled from published dimensions. Overall 9.2 x 7.9 x 16.6 mm. Key dimensions: thread #12-24; thread diameter 5.5 mm; threads per inch 24; pitch 1.1 mm; inch to 25.4 mm; length under head in 0.5; length under head 12.7 mm; head across flats 7.9 mm; head height 3.9 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Inch specifications are converted using exactly 25.4 mm per inch. Numbered machine-screw nuts use ASME B18.6.3 dimensions; larger full hex nuts use the cited ASME B18.2.2 supplier table. 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.

  • Hex bolt #10-24 UNCstep#10-24Rotate in 3D
    Hex bolt #10-24 UNC

    Hex bolt #10-24 UNC, modeled from published dimensions. Overall 9.2 x 7.9 x 15.7 mm. Key dimensions: thread #10-24; thread diameter 4.8 mm; threads per inch 24; pitch 1.1 mm; inch to 25.4 mm; length under head in 0.5; length under head 12.7 mm; head across flats 7.9 mm; head height 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. Inch specifications are converted using exactly 25.4 mm per inch. Numbered machine-screw nuts use ASME B18.6.3 dimensions; larger full hex nuts use the cited ASME B18.2.2 supplier table. 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.

  • Nylon-insert lock nut M8stepM8Rotate in 3D
    Nylon-insert lock nut M8

    Nylon-insert lock nut M8, modeled from published dimensions. Overall 15 x 13 x 8 mm. Key dimensions: thread diameter 8 mm; pitch 1.3 mm; across flats 13 mm; total height 8 mm; metal hex height 5.5 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 985 overall and spanner dimensions. Nylon insert and retaining collar are representative; undeformed nylon bore is shown. 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.

  • Nylon-insert lock nut M6stepM6Rotate in 3D
    Nylon-insert lock nut M6

    Nylon-insert lock nut M6, modeled from published dimensions. Overall 11.5 x 10 x 6 mm. Key dimensions: thread diameter 6 mm; pitch 1 mm; across flats 10 mm; total height 6 mm; metal hex 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. DIN 985 overall and spanner dimensions. Nylon insert and retaining collar are representative; undeformed nylon bore is shown. 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.

  • Nylon-insert lock nut M5stepM5Rotate in 3D
    Nylon-insert lock nut M5

    Nylon-insert lock nut M5, modeled from published dimensions. Overall 9.2 x 8 x 5 mm. Key dimensions: thread diameter 5 mm; pitch 0.8 mm; across flats 8 mm; total height 5 mm; metal hex height 3.2 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 985 overall and spanner dimensions. Nylon insert and retaining collar are representative; undeformed nylon bore is shown. 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.

  • Nylon-insert lock nut M12stepM12Rotate in 3D
    Nylon-insert lock nut M12

    Nylon-insert lock nut M12, modeled from published dimensions. Overall 21.9 x 19 x 12 mm. Key dimensions: thread diameter 12 mm; pitch 1.8 mm; across flats 19 mm; total height 12 mm; metal hex height 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 985 overall and spanner dimensions. Nylon insert and retaining collar are representative; undeformed nylon bore is shown. 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.

  • Nylon-insert lock nut M10stepM10Rotate in 3D
    Nylon-insert lock nut M10

    Nylon-insert lock nut M10, modeled from published dimensions. Overall 19.6 x 17 x 10 mm. Key dimensions: thread diameter 10 mm; pitch 1.5 mm; across flats 17 mm; total height 10 mm; metal hex height 6.5 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 985 overall and spanner dimensions. Nylon insert and retaining collar are representative; undeformed nylon bore is shown. 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.

  • Plain flange nut M8stepM8Rotate 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.

  • Plain flange nut M6stepM6Rotate 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.

  • Plain flange nut M5stepM5Rotate 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.

  • Plain flange nut M12stepM12Rotate 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.

  • Plain flange nut M10stepM10Rotate 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.

  • Hex nut M8stepM8Rotate 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.

  • Hex nut M6stepM6Rotate 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.

  • Hex nut M5stepM5Rotate 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.

  • Hex nut M20stepM20Rotate 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.

  • Hex nut M18stepM18Rotate 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.

  • Hex nut M16stepM16Rotate 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.

  • Hex nut M14stepM14Rotate 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.

  • Hex nut M12stepM12Rotate 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.

  • Hex nut M10stepM10Rotate 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.

  • Hex bolt M8 x 16stepM8Rotate 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.

  • Hex bolt M6 x 12stepM6Rotate 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.

  • Hex bolt M5 x 12stepM5Rotate 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.

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