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.
1621 3D parts · STEP, STL, SketchUp, 3MF, OBJ, glTF, IFC, Rhino and more · public domain
188 3D parts in Fasteners & hardware · Clear all
stepUCP205Rotate in 3D
UCP205 pillow-block bearingUCP205 pillow-block bearing, modeled from published dimensions. Overall 140 x 38.8 x 75.4 mm. Key dimensions: bore 25 mm; shaft axis height 36.5 mm; length 140 mm; base width 38 mm; bolt pitch 105 mm; foot height 16 mm; housing height 70 mm; insert outer diameter 52 mm; insert width 34.1 mm; insert short offset 14.3 mm; grease fitting 1/4-28 UNF nominal, thread omitted. Shaft height, bore, mounting slots, base envelope and insert datums follow the Koyo tables. Housing H2 excludes the grease fitting; its reconstructed fitting adds 5.35 mm. Cast contour, ribs, relief, seal/race details and screw heads are reconstructed. Spherical outer ring is shown upright in a simplified cylindrical seat; self-alignment, rolling elements, preload and load rating are not simulated. M6 set screws have cylindrical thread envelopes. 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.
371 KBDetails & downloadstepUCP204Rotate in 3D
UCP204 pillow-block bearingUCP204 pillow-block bearing, modeled from published dimensions. Overall 127 x 38 x 70.4 mm. Key dimensions: bore 20 mm; shaft axis height 33.3 mm; length 127 mm; base width 38 mm; bolt pitch 95 mm; foot height 16 mm; housing height 65 mm; insert outer diameter 47 mm; insert width 31 mm; insert short offset 12.7 mm; grease fitting 1/4-28 UNF nominal, thread omitted. Shaft height, bore, mounting slots, base envelope and insert datums follow the Koyo tables. Housing H2 excludes the grease fitting; its reconstructed fitting adds 5.35 mm. Cast contour, ribs, relief, seal/race details and screw heads are reconstructed. Spherical outer ring is shown upright in a simplified cylindrical seat; self-alignment, rolling elements, preload and load rating are not simulated. M6 set screws have cylindrical thread envelopes. 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.
376 KBDetails & downloadstepUCF205Rotate in 3D
UCF205 square-flange bearingUCF205 square-flange bearing, modeled from published dimensions. Overall 95 x 95 x 35.8 mm. Key dimensions: bore 25 mm; flange square 95 mm; bolt square 70 mm; bolt hole diameter 12 mm; flange thickness 13 mm; housing projection 27 mm; insert center from mount face 16 mm; total projection 35.8 mm; insert outer diameter 52 mm; insert width 34.1 mm; insert short offset 14.3 mm; grease fitting 1/4-28 UNF nominal, thread omitted. Mounting square, hole diameter, flange thickness, insert center and total projection follow the Koyo UCF table. The mount face is Z=0, and the shaft axis is +Z. Cast outline and boss, grease fitting, seals and race details are reconstructed. Spherical insert occupies a simplified cylindrical seat. Rolling elements, self-alignment, preload and load rating are not simulated. M6 set screws have cylindrical thread envelopes. 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.
304 KBDetails & downloadstepUCF204Rotate in 3D
UCF204 square-flange bearingUCF204 square-flange bearing, modeled from published dimensions. Overall 86 x 86 x 33.3 mm. Key dimensions: bore 20 mm; flange square 86 mm; bolt square 64 mm; bolt hole diameter 12 mm; flange thickness 11 mm; housing projection 25.5 mm; insert center from mount face 15 mm; total projection 33.3 mm; insert outer diameter 47 mm; insert width 31 mm; insert short offset 12.7 mm; grease fitting 1/4-28 UNF nominal, thread omitted. Mounting square, hole diameter, flange thickness, insert center and total projection follow the Koyo UCF table. The mount face is Z=0, and the shaft axis is +Z. Cast outline and boss, grease fitting, seals and race details are reconstructed. Spherical insert occupies a simplified cylindrical seat. Rolling elements, self-alignment, preload and load rating are not simulated. M6 set screws have cylindrical thread envelopes. 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.
301 KBDetails & downloadstepM8Rotate in 3D
M8 channel nut, original 34 x 19 mm layoutM8 channel nut, original 34 x 19 mm layout, modeled from published dimensions. Overall 34 x 19 x 8 mm. Key dimensions: thread diameter 8 mm; pitch 1.3 mm; length 34 mm; width 19 mm; height 8 mm; groove width 2.7 mm; groove depth 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. Original nut sized to the reconstructed channel cavity and return lips. The source establishes the channel-nut type and thread options only; the external dimensions and grooves are this library design, not a vendor replica. Unloaded plain nut without a positioning spring. Serrations, spring action and load capacity are not modeled. 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.
444 KBDetails & downloadstepM12Rotate in 3D
M12 channel nut, original 34 x 19 mm layoutM12 channel nut, original 34 x 19 mm layout, modeled from published dimensions. Overall 34 x 19 x 8 mm. Key dimensions: thread diameter 12 mm; pitch 1.8 mm; length 34 mm; width 19 mm; height 8 mm; groove width 2.7 mm; groove depth 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. Original nut sized to the reconstructed channel cavity and return lips. The source establishes the channel-nut type and thread options only; the external dimensions and grooves are this library design, not a vendor replica. Unloaded plain nut without a positioning spring. Serrations, spring action and load capacity are not modeled. 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.
406 KBDetails & downloadstep50 x 47Rotate in 3D
40 mm strut angle, 50 x 47 mm legs40 mm strut angle, 50 x 47 mm legs, modeled from published dimensions. Overall 40 x 50 x 47 mm. Key dimensions: width 40 mm; thickness 5 mm; hole diameter 14 mm; selected hole offset from free end 20.5 mm. P1026 metric width, leg envelopes, thickness and 14 mm holes follow the manufacturer sheet. Hole centers are selected at 20.5 mm from each free end because the sheet does not dimension them; corner bend radii are simplified. This original drilling layout is not a verified vendor drilling template. 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.
56 KBDetails & downloadstep41 x 41Rotate in 3D
41 x 41 x 2.5 mm slotted strut, 600 mm41 x 41 x 2.5 mm slotted strut, 600 mm, modeled from published dimensions. Overall 41 x 41 x 600 mm. Key dimensions: width 41 mm; height 41 mm; thickness 2.5 mm; length 600 mm; slot pitch 50 mm; first slot center 25 mm; reconstructed mouth 22 mm; reconstructed lip drop 7.5 mm. Metric P1000/P1000T installation envelope and slotted-hole size/pitch. Selected cut length and first-hole offset are library choices. This is the 41 mm metric section, not the 41.3 mm US section. Return lip, 22 mm mouth, 7.5 mm return depth and 0.7 mm corner radii are original reconstructed details not dimensioned by the cited metric sheet. Section properties and structural capacity are not assigned. 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.
319 KBDetails & downloadstep41 x 41Rotate in 3D
41 x 41 x 2.5 mm slotted strut, 300 mm41 x 41 x 2.5 mm slotted strut, 300 mm, modeled from published dimensions. Overall 41 x 41 x 300 mm. Key dimensions: width 41 mm; height 41 mm; thickness 2.5 mm; length 300 mm; slot pitch 50 mm; first slot center 25 mm; reconstructed mouth 22 mm; reconstructed lip drop 7.5 mm. Metric P1000/P1000T installation envelope and slotted-hole size/pitch. Selected cut length and first-hole offset are library choices. This is the 41 mm metric section, not the 41.3 mm US section. Return lip, 22 mm mouth, 7.5 mm return depth and 0.7 mm corner radii are original reconstructed details not dimensioned by the cited metric sheet. Section properties and structural capacity are not assigned. 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.
221 KBDetails & downloadstep41 x 41Rotate in 3D
41 x 41 x 2.5 mm plain strut, 300 mm41 x 41 x 2.5 mm plain strut, 300 mm, modeled from published dimensions. Overall 41 x 41 x 300 mm. Key dimensions: width 41 mm; height 41 mm; thickness 2.5 mm; length 300 mm; reconstructed mouth 22 mm; reconstructed lip drop 7.5 mm. Metric P1000/P1000T installation envelope and slotted-hole size/pitch. Selected cut length and first-hole offset are library choices. This is the 41 mm metric section, not the 41.3 mm US section. Return lip, 22 mm mouth, 7.5 mm return depth and 0.7 mm corner radii are original reconstructed details not dimensioned by the cited metric sheet. Section properties and structural capacity are not assigned. 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.
124 KBDetails & downloadstepM8Rotate in 3D
M8 x 100 mm threaded rodM8 x 100 mm threaded rod, modeled from published dimensions. Overall 8 x 8 x 100 mm. Key dimensions: thread diameter 8 mm; pitch 1.3 mm; length 100 mm; root land radial adjustment 0 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Selected 100 mm rod length; the cited table supplies the corresponding coarse-pitch coupling interface. Root land radius is increased 0.01 mm to stabilize the long BREP union. Cut-end treatment is 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.
2.2 MBDetails & downloadstepM6Rotate in 3D
M6 x 100 mm threaded rodM6 x 100 mm threaded rod, modeled from published dimensions. Overall 6 x 6 x 100 mm. Key dimensions: thread diameter 6 mm; pitch 1 mm; length 100 mm; root land radial adjustment 0 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Selected 100 mm rod length; the cited table supplies the corresponding coarse-pitch coupling interface. Root land radius is increased 0.01 mm to stabilize the long BREP union. Cut-end treatment is 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.
2.9 MBDetails & downloadstepM12Rotate in 3D
M12 x 100 mm threaded rodM12 x 100 mm threaded rod, modeled from published dimensions. Overall 12 x 12 x 100 mm. Key dimensions: thread diameter 12 mm; pitch 1.8 mm; length 100 mm; root land radial adjustment 0 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Selected 100 mm rod length; the cited table supplies the corresponding coarse-pitch coupling interface. Root land radius is increased 0.01 mm to stabilize the long BREP union. Cut-end treatment is 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.
1.6 MBDetails & downloadstepM10Rotate in 3D
M10 x 100 mm threaded rodM10 x 100 mm threaded rod, modeled from published dimensions. Overall 10 x 10 x 100 mm. Key dimensions: thread diameter 10 mm; pitch 1.5 mm; length 100 mm; root land radial adjustment 0 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Selected 100 mm rod length; the cited table supplies the corresponding coarse-pitch coupling interface. Root land radius is increased 0.01 mm to stabilize the long BREP union. Cut-end treatment is 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.
1.9 MBDetails & downloadstepM8Rotate in 3D
M8 nominal DIN 580 eye boltM8 nominal DIN 580 eye bolt, modeled from published dimensions. Overall 36 x 20 x 49 mm. Key dimensions: thread diameter 8 mm; pitch 1.3 mm; thread length 13 mm; base diameter 20 mm; base height 6 mm; eye outer diameter 36 mm; eye inner diameter 20 mm; height above seat 36 mm; eye section 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. Dimensioned mounting envelope and eye opening follow the manufacturer table. Ring uses a circular swept section; forged neck and blends are simplified. Geometry for layout and visualization only; no lifting capacity or manufacturing certification is assigned to this generated part. 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.
566 KBDetails & downloadstepM6Rotate in 3D
M6 nominal DIN 580 eye boltM6 nominal DIN 580 eye bolt, modeled from published dimensions. Overall 36 x 20 x 49 mm. Key dimensions: thread diameter 6 mm; pitch 1 mm; thread length 13 mm; base diameter 20 mm; base height 6 mm; eye outer diameter 36 mm; eye inner diameter 20 mm; height above seat 36 mm; eye section 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. Dimensioned mounting envelope and eye opening follow the manufacturer table. Ring uses a circular swept section; forged neck and blends are simplified. Geometry for layout and visualization only; no lifting capacity or manufacturing certification is assigned to this generated part. 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.
663 KBDetails & downloadstepM12Rotate in 3D
M12 nominal DIN 580 eye boltM12 nominal DIN 580 eye bolt, modeled from published dimensions. Overall 54 x 30 x 73.5 mm. Key dimensions: thread diameter 12 mm; pitch 1.8 mm; thread length 20.5 mm; base diameter 30 mm; base height 10 mm; eye outer diameter 54 mm; eye inner diameter 30 mm; height above seat 53 mm; eye section 12 mm. Modeled right-hand nominal 60-degree threads. Tolerance allowances, root radii and manufacturing runouts are simplified; use the stated nominal dimensions for layout. Dimensioned mounting envelope and eye opening follow the manufacturer table. Ring uses a circular swept section; forged neck and blends are simplified. Geometry for layout and visualization only; no lifting capacity or manufacturing certification is assigned to this generated part. 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 & downloadstepM10Rotate in 3D
M10 nominal DIN 580 eye boltM10 nominal DIN 580 eye bolt, modeled from published dimensions. Overall 45 x 25 x 62 mm. Key dimensions: thread diameter 10 mm; pitch 1.5 mm; thread length 17 mm; base diameter 25 mm; base height 8 mm; eye outer diameter 45 mm; eye inner diameter 25 mm; height above seat 45 mm; eye section 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. Dimensioned mounting envelope and eye opening follow the manufacturer table. Ring uses a circular swept section; forged neck and blends are simplified. Geometry for layout and visualization only; no lifting capacity or manufacturing certification is assigned to this generated part. 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.
644 KBDetails & downloadstepM8Rotate in 3D
M8 DIN 6334 coupling nutM8 DIN 6334 coupling nut, modeled from published dimensions. Overall 15 x 13 x 24 mm. Key dimensions: thread diameter 8 mm; pitch 1.3 mm; across flats 13 mm; length 24 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 6334 nominal length and wrench size. Inspection holes and manufacturer markings are omitted. 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.
865 KBDetails & downloadstepM6Rotate in 3D
M6 DIN 6334 coupling nutM6 DIN 6334 coupling nut, modeled from published dimensions. Overall 11.5 x 10 x 18 mm. Key dimensions: thread diameter 6 mm; pitch 1 mm; across flats 10 mm; length 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. DIN 6334 nominal length and wrench size. Inspection holes and manufacturer markings are omitted. 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.
843 KBDetails & downloadstepM12Rotate in 3D
M12 DIN 6334 coupling nutM12 DIN 6334 coupling nut, modeled from published dimensions. Overall 21.9 x 19 x 36 mm. Key dimensions: thread diameter 12 mm; pitch 1.8 mm; across flats 19 mm; length 36 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 6334 nominal length and wrench size. Inspection holes and manufacturer markings are omitted. 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.
881 KBDetails & downloadstepM10Rotate in 3D
M10 DIN 6334 coupling nutM10 DIN 6334 coupling nut, modeled from published dimensions. Overall 19.6 x 17 x 30 mm. Key dimensions: thread diameter 10 mm; pitch 1.5 mm; across flats 17 mm; length 30 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 6334 nominal length and wrench size. Inspection holes and manufacturer markings are omitted. 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.
898 KBDetails & downloadstlRotate in 3D
Torsion spring, 12 mm coil OD, 90-degree legsTorsion spring, 12 mm coil OD, 90-degree legs, modeled from published dimensions. Overall 31 x 31 x 8.6 mm. Key dimensions: coil outer diameter 12 mm; wire diameter 1.5 mm; coil turns 4.3; coil pitch 1.7 mm; straight leg length 25 mm; free leg angle degrees 90. Original geometric torsion-spring prototype. A continuous spline joins the nominal helical coil to the tangential legs, arranged 90 degrees apart, with clearance between coils and plain cut ends. No torque rating or allowable rotation is assigned; this model is an unloaded layout shape. Watertight STL mesh in millimeters, ready to slice; printed performance is untested. Export to 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.
5.5 MBDetails & downloadstlRotate in 3D
Hooked extension spring, 12 mm coil ODHooked extension spring, 12 mm coil OD, modeled from published dimensions. Overall 12 x 12 x 38.1 mm. Key dimensions: coil outer diameter 12 mm; wire diameter 1 mm; coil turns 14; coil pitch 1.1 mm; coil centerline length 15.1 mm; hook centerline radius 5.5 mm; hook arc degrees 300. Original geometric spring prototype with two open machine-style hooks and smooth lead-in bends. Close-wound coils retain a small modeling clearance. Initial tension, manufacturing residual stress, force-extension behavior and fatigue are not simulated. Watertight STL mesh in millimeters, ready to slice; printed performance is untested. Export to 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.
12.6 MBDetails & download
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