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

188 3D parts in Fasteners & hardware · Clear all

  • Countersunk screw M6 x 16stepM6Rotate in 3D
    Countersunk screw M6 x 16

    Countersunk screw M6 x 16, modeled from published dimensions. Overall 12.2 x 12.2 x 16 mm. Key dimensions: thread diameter 6 mm; pitch 1 mm; length including head 16 mm; head actual diameter 12.2 mm; head reference height 3.7 mm; cone included angle degrees 90; socket across flats 4 mm; socket depth 2.2 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. 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.

  • Countersunk screw M5 x 16stepM5Rotate in 3D
    Countersunk screw M5 x 16

    Countersunk screw M5 x 16, modeled from published dimensions. Overall 10.1 x 10.1 x 16 mm. Key dimensions: thread diameter 5 mm; pitch 0.8 mm; length including head 16 mm; head actual diameter 10.1 mm; head reference height 3.1 mm; cone included angle degrees 90; socket across flats 3 mm; socket depth 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. 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.

  • Countersunk screw M4 x 12stepM4Rotate in 3D
    Countersunk screw M4 x 12

    Countersunk screw M4 x 12, modeled from published dimensions. Overall 8 x 8 x 12 mm. Key dimensions: thread diameter 4 mm; pitch 0.7 mm; length including head 12 mm; head actual diameter 8 mm; head reference height 2.5 mm; cone included angle degrees 90; socket across flats 2.5 mm; socket depth 1.4 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. 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.

  • Countersunk screw M3 x 10stepM3Rotate in 3D
    Countersunk screw M3 x 10

    Countersunk screw M3 x 10, modeled from published dimensions. Overall 5.8 x 5.8 x 10 mm. Key dimensions: thread diameter 3 mm; pitch 0.5 mm; length including head 10 mm; head actual diameter 5.8 mm; head reference height 1.9 mm; cone included angle degrees 90; socket across flats 2 mm; socket depth 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. 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.

  • Button head screw M8 x 16stepM8Rotate in 3D
    Button head screw M8 x 16

    Button head screw M8 x 16, modeled from published dimensions. Overall 14 x 14 x 20.4 mm. Key dimensions: thread diameter 8 mm; pitch 1.3 mm; length under head 16 mm; head diameter 14 mm; head height 4.4 mm; socket across flats 5 mm; socket depth 2.6 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Button crown uses the cited dome-radius range and reference top-flat diameter. Socket depths are cross-checked against the manufacturer catalog. 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.

  • Button head screw M6 x 12stepM6Rotate in 3D
    Button head screw M6 x 12

    Button head screw M6 x 12, modeled from published dimensions. Overall 10.5 x 10.5 x 15.3 mm. Key dimensions: thread diameter 6 mm; pitch 1 mm; length under head 12 mm; head diameter 10.5 mm; head height 3.3 mm; socket across flats 4 mm; socket depth 2.1 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Button crown uses the cited dome-radius range and reference top-flat diameter. Socket depths are cross-checked against the manufacturer catalog. 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.

  • Button head screw M5 x 12stepM5Rotate in 3D
    Button head screw M5 x 12

    Button head screw M5 x 12, modeled from published dimensions. Overall 9.5 x 9.5 x 14.8 mm. Key dimensions: thread diameter 5 mm; pitch 0.8 mm; length under head 12 mm; head diameter 9.5 mm; head height 2.8 mm; socket across flats 3 mm; socket depth 1.6 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Button crown uses the cited dome-radius range and reference top-flat diameter. Socket depths are cross-checked against the manufacturer catalog. 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.

  • Button head screw M4 x 10stepM4Rotate in 3D
    Button head screw M4 x 10

    Button head screw M4 x 10, modeled from published dimensions. Overall 7.6 x 7.6 x 12.2 mm. Key dimensions: thread diameter 4 mm; pitch 0.7 mm; length under head 10 mm; head diameter 7.6 mm; head height 2.2 mm; socket across flats 2.5 mm; socket depth 1.3 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Button crown uses the cited dome-radius range and reference top-flat diameter. Socket depths are cross-checked against the manufacturer catalog. 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.

  • Button head screw M3 x 8stepM3Rotate in 3D
    Button head screw M3 x 8

    Button head screw M3 x 8, modeled from published dimensions. Overall 5.7 x 5.7 x 9.7 mm. Key dimensions: thread diameter 3 mm; pitch 0.5 mm; length under head 8 mm; head diameter 5.7 mm; head height 1.7 mm; socket across flats 2 mm; socket depth 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. Button crown uses the cited dome-radius range and reference top-flat diameter. Socket depths are cross-checked against the manufacturer catalog. 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.

  • Socket cap screw M8 x 16stepM8Rotate in 3D
    Socket cap screw M8 x 16

    Socket cap screw M8 x 16, modeled from published dimensions. Overall 13 x 13 x 24 mm. Key dimensions: thread diameter 8 mm; pitch 1.3 mm; length under head 16 mm; head diameter 13 mm; head height 8 mm; socket across flats 6 mm; socket depth 4 mm. Head and socket nominal dimensions follow the cited DIN 912 / ISO 4762 supplier table. Full modeled right-hand thread with nominal truncated 60-degree profile. Manufacturing tolerance class, root radius and under-head fillet are simplified. 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.

  • Socket cap screw M6 x 20stepM6Rotate in 3D
    Socket cap screw M6 x 20

    Socket cap screw M6 x 20, modeled from published dimensions. Overall 10 x 10 x 26 mm. Key dimensions: thread diameter 6 mm; pitch 1 mm; length under head 20 mm; head diameter 10 mm; head height 6 mm; socket across flats 5 mm; socket depth 3 mm. Head and socket nominal dimensions follow the cited DIN 912 / ISO 4762 supplier table. Full modeled right-hand thread with nominal truncated 60-degree profile. Manufacturing tolerance class, root radius and under-head fillet are simplified. 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.

  • Socket cap screw M6 x 12stepM6Rotate in 3D
    Socket cap screw M6 x 12

    Socket cap screw M6 x 12, modeled from published dimensions. Overall 10 x 10 x 18 mm. Key dimensions: thread diameter 6 mm; pitch 1 mm; length under head 12 mm; head diameter 10 mm; head height 6 mm; socket across flats 5 mm; socket depth 3 mm. Head and socket nominal dimensions follow the cited DIN 912 / ISO 4762 supplier table. Full modeled right-hand thread with nominal truncated 60-degree profile. Manufacturing tolerance class, root radius and under-head fillet are simplified. 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.

  • Socket cap screw M5 x 12stepM5Rotate in 3D
    Socket cap screw M5 x 12

    Socket cap screw M5 x 12, modeled from published dimensions. Overall 8.5 x 8.5 x 17 mm. Key dimensions: thread diameter 5 mm; pitch 0.8 mm; length under head 12 mm; head diameter 8.5 mm; head height 5 mm; socket across flats 4 mm; socket depth 2.5 mm. Head and socket nominal dimensions follow the cited DIN 912 / ISO 4762 supplier table. Full modeled right-hand thread with nominal truncated 60-degree profile. Manufacturing tolerance class, root radius and under-head fillet are simplified. 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.

  • Socket cap screw M4 x 10stepM4Rotate in 3D
    Socket cap screw M4 x 10

    Socket cap screw M4 x 10, modeled from published dimensions. Overall 7 x 7 x 14 mm. Key dimensions: thread diameter 4 mm; pitch 0.7 mm; length under head 10 mm; head diameter 7 mm; head height 4 mm; socket across flats 3 mm; socket depth 2 mm. Head and socket nominal dimensions follow the cited DIN 912 / ISO 4762 supplier table. Full modeled right-hand thread with nominal truncated 60-degree profile. Manufacturing tolerance class, root radius and under-head fillet are simplified. 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.

  • Socket cap screw M3 x 8stepM3Rotate in 3D
    Socket cap screw M3 x 8

    Socket cap screw M3 x 8, modeled from published dimensions. Overall 5.5 x 5.5 x 11 mm. Key dimensions: thread diameter 3 mm; pitch 0.5 mm; length under head 8 mm; head diameter 5.5 mm; head height 3 mm; socket across flats 2.5 mm; socket depth 1.3 mm. Head and socket nominal dimensions follow the cited DIN 912 / ISO 4762 supplier table. Full modeled right-hand thread with nominal truncated 60-degree profile. Manufacturing tolerance class, root radius and under-head fillet are simplified. 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.

  • Socket cap screw M2 x 6stepM2Rotate in 3D
    Socket cap screw M2 x 6

    Socket cap screw M2 x 6, modeled from published dimensions. Overall 3.8 x 3.8 x 8 mm. Key dimensions: thread diameter 2 mm; pitch 0.4 mm; length under head 6 mm; head diameter 3.8 mm; head height 2 mm; socket across flats 1.5 mm; socket depth 1 mm. Head and socket nominal dimensions follow the cited DIN 912 / ISO 4762 supplier table. Full modeled right-hand thread with nominal truncated 60-degree profile. Manufacturing tolerance class, root radius and under-head fillet are simplified. 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.

  • Socket cap screw M2 x 10stepM2Rotate in 3D
    Socket cap screw M2 x 10

    Socket cap screw M2 x 10, modeled from published dimensions. Overall 3.8 x 3.8 x 12 mm. Key dimensions: thread diameter 2 mm; pitch 0.4 mm; length under head 10 mm; head diameter 3.8 mm; head height 2 mm; socket across flats 1.5 mm; socket depth 1 mm. Head and socket nominal dimensions follow the cited DIN 912 / ISO 4762 supplier table. Full modeled right-hand thread with nominal truncated 60-degree profile. Manufacturing tolerance class, root radius and under-head fillet are simplified. 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.

  • Socket cap screw M2.5 x 6stepM2.5Rotate in 3D
    Socket cap screw M2.5 x 6

    Socket cap screw M2.5 x 6, modeled from published dimensions. Overall 4.5 x 4.5 x 8.5 mm. Key dimensions: thread diameter 2.5 mm; pitch 0.5 mm; length under head 6 mm; head diameter 4.5 mm; head height 2.5 mm; socket across flats 2 mm; socket depth 1.1 mm. Head and socket nominal dimensions follow the cited DIN 912 / ISO 4762 supplier table. Full modeled right-hand thread with nominal truncated 60-degree profile. Manufacturing tolerance class, root radius and under-head fillet are simplified. 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.

  • Socket cap screw M12 x 25stepM12Rotate in 3D
    Socket cap screw M12 x 25

    Socket cap screw M12 x 25, modeled from published dimensions. Overall 18 x 18 x 37 mm. Key dimensions: thread diameter 12 mm; pitch 1.8 mm; length under head 25 mm; head diameter 18 mm; head height 12 mm; socket across flats 10 mm; socket depth 6 mm. Head and socket nominal dimensions follow the cited DIN 912 / ISO 4762 supplier table. Full modeled right-hand thread with nominal truncated 60-degree profile. Manufacturing tolerance class, root radius and under-head fillet are simplified. 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.

  • Socket cap screw M10 x 20stepM10Rotate in 3D
    Socket cap screw M10 x 20

    Socket cap screw M10 x 20, modeled from published dimensions. Overall 16 x 16 x 30 mm. Key dimensions: thread diameter 10 mm; pitch 1.5 mm; length under head 20 mm; head diameter 16 mm; head height 10 mm; socket across flats 8 mm; socket depth 5 mm. Head and socket nominal dimensions follow the cited DIN 912 / ISO 4762 supplier table. Full modeled right-hand thread with nominal truncated 60-degree profile. Manufacturing tolerance class, root radius and under-head fillet are simplified. 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.

  • Ball bearing 625 (sealed)step625Rotate in 3D
    Ball bearing 625 (sealed)

    Ball bearing 625 (sealed), modeled from published dimensions. Overall 16 x 16 x 5 mm. Key dimensions: bore 5 mm; outside diameter 16 mm; width 5 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. 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.

  • Ball bearing 6205 (sealed)step6205Rotate in 3D
    Ball bearing 6205 (sealed)

    Ball bearing 6205 (sealed), modeled from published dimensions. Overall 52 x 52 x 15 mm. Key dimensions: bore 25 mm; outside diameter 52 mm; width 15 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. 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.

  • Ball bearing 6204 (sealed)step6204Rotate in 3D
    Ball bearing 6204 (sealed)

    Ball bearing 6204 (sealed), modeled from published dimensions. Overall 47 x 47 x 14 mm. Key dimensions: bore 20 mm; outside diameter 47 mm; width 14 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. 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.

  • Ball bearing 6203 (sealed)step6203Rotate in 3D
    Ball bearing 6203 (sealed)

    Ball bearing 6203 (sealed), modeled from published dimensions. Overall 40 x 40 x 12 mm. Key dimensions: bore 17 mm; outside diameter 40 mm; width 12 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. 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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