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.
3503 3D parts · STEP, STL, SketchUp, 3MF, OBJ, glTF, IFC, Rhino and more · public domain
715 3D parts as STEP · Clear all
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5.5 / 2.1 mm DC barrel jack5.5 / 2.1 mm DC barrel jack, modeled from published dimensions. Overall 9 x 14.4 x 14 mm. Key dimensions: plug outer diameter 5.5 mm; center pin 2.1 mm. Original reconstructed connector model with explicitly stated nominal layout dimensions. USB-C mouth and shell datums follow the Same Sky UJ31-CH-G1 drawing; other connector envelopes are generic library choices. Contacts, shell tabs and solder tails are simplified. This is not a manufacturer-approved PCB footprint or a connector interoperability certification. 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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LiPo pack with XT60 and JST-XH balance leadLiPo pack with XT60 and JST-XH balance lead, modeled from published dimensions. Overall 105 x 76.5 x 25 mm. Key dimensions: xt60 contact pitch 7.2 mm; xt60 contact bore 3.5 mm; jst xh pitch 2.5 mm; balance circuits 3. Original nominal 105 x 35 x 25 mm pack layout. XT60-family polarized socket and JST-XH 3-circuit balance connector are reconstructed; JST source establishes 2.5 mm pitch. Undimensioned housings, wire gauges and lead lengths are selected library values, not exact manufacturer tooling. No capacity, chemistry performance, pinout certification or electrical design is provided. 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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2-cell 18650 holder2-cell 18650 holder, modeled from published dimensions. Overall 42 x 76 x 16 mm. Key dimensions: cells 2; cell diameter clearance 19 mm; contact spacing nominal 67.6 mm. Cell envelope uses Molicel P28A maximum diameter 18.6 mm and height 65.2 mm. Terminal shapes and wrap are original simplified details; no manufacturer markings are copied. Holder and pack geometry are original nominal library designs. Series tabs illustrate alternating cell orientation. Protection, electrical insulation stack, wiring and enclosure integration are not an engineered battery system; this model makes no capacity or electrical performance claim. 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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1-cell 18650 holder1-cell 18650 holder, modeled from published dimensions. Overall 22 x 76 x 16 mm. Key dimensions: cells 1; cell diameter clearance 19 mm; contact spacing nominal 67.6 mm. Cell envelope uses Molicel P28A maximum diameter 18.6 mm and height 65.2 mm. Terminal shapes and wrap are original simplified details; no manufacturer markings are copied. Holder and pack geometry are original nominal library designs. Series tabs illustrate alternating cell orientation. Protection, electrical insulation stack, wiring and enclosure integration are not an engineered battery system; this model makes no capacity or electrical performance claim. 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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18650 cell, maximum envelope18650 cell, maximum envelope, modeled from published dimensions. Overall 18.6 x 18.6 x 65.2 mm. Cell envelope uses Molicel P28A maximum diameter 18.6 mm and height 65.2 mm. Terminal shapes and wrap are original simplified details; no manufacturer markings are copied. Holder and pack geometry are original nominal library designs. Series tabs illustrate alternating cell orientation. Protection, electrical insulation stack, wiring and enclosure integration are not an engineered battery system; this model makes no capacity or electrical performance claim. 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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4S 18650 pack layout4S 18650 pack layout, modeled from published dimensions. Overall 80 x 21.5 x 65.6 mm. Key dimensions: series cells 4; cell pitch 19.5 mm. Cell envelope uses Molicel P28A maximum diameter 18.6 mm and height 65.2 mm. Terminal shapes and wrap are original simplified details; no manufacturer markings are copied. Holder and pack geometry are original nominal library designs. Series tabs illustrate alternating cell orientation. Protection, electrical insulation stack, wiring and enclosure integration are not an engineered battery system; this model makes no capacity or electrical performance claim. 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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2S 18650 pack layout2S 18650 pack layout, modeled from published dimensions. Overall 41 x 21.5 x 65.4 mm. Key dimensions: series cells 2; cell pitch 19.5 mm. Cell envelope uses Molicel P28A maximum diameter 18.6 mm and height 65.2 mm. Terminal shapes and wrap are original simplified details; no manufacturer markings are copied. Holder and pack geometry are original nominal library designs. Series tabs illustrate alternating cell orientation. Protection, electrical insulation stack, wiring and enclosure integration are not an engineered battery system; this model makes no capacity or electrical performance claim. 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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830-point solderless breadboard830-point solderless breadboard, modeled from published dimensions. Overall 165.1 x 54.6 x 8.5 mm. Key dimensions: hole pitch 2.5 mm; terminal points 630; power points 200; socket 1.1 mm. 830-point arrangement and nominal 165.1 x 54.6 x 8.5 mm body follow BusBoard BB830 reference. Original housing and square socket reconstruction, 2.54 mm grid. Tabs, printed numbering, hidden contact bars and contact springs are omitted. No electrical rating is transferred to this model. 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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ESP8266 D1 mini V3 layoutESP8266 D1 mini V3 layout, modeled from published dimensions. Overall 25.6 x 35.2 x 13.4 mm. Key dimensions: header pitch 2.5 mm; header first y 6.9 mm; pins 16. Original reconstructed layout. ESP32 board envelope and header grid follow Espressif drawing; RF module is 18 x 25.5 x 3.1 mm. Antenna keepout is not exported as a physical part. Connector and small component detail is representative. D1 mini board envelope follows WEMOS 34.2 x 25.6 mm specification. Its 22.86 mm header-row spacing, centered 2.54 mm grid and component heights are explicit nominal library choices, not dimensioned in that source. No electrical/RF simulation or guaranteed connector fit. 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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ESP32 DevKitC V4 layoutESP32 DevKitC V4 layout, modeled from published dimensions. Overall 27.9 x 49.5 x 13.7 mm. Key dimensions: header pitch 2.5 mm; header first y 1.3 mm; pins 38. Original reconstructed layout. ESP32 board envelope and header grid follow Espressif drawing; RF module is 18 x 25.5 x 3.1 mm. Antenna keepout is not exported as a physical part. Connector and small component detail is representative. D1 mini board envelope follows WEMOS 34.2 x 25.6 mm specification. Its 22.86 mm header-row spacing, centered 2.54 mm grid and component heights are explicit nominal library choices, not dimensioned in that source. No electrical/RF simulation or guaranteed connector fit. 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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Raspberry Pi 5 Model B layoutRaspberry Pi 5 Model B layout, modeled from published dimensions. Overall 89.5 x 57.3 x 20.6 mm. Key dimensions: corner radius 3 mm; gpio pitch 2.5 mm; gpio row spacing 2.5 mm. PCB outline, four mounting holes, GPIO grid and dimensioned port centerlines follow the official mechanical drawing. Geometry is an original reconstruction; connector depths, small component footprints, SD housing, shell gauges and PCB thickness are nominal where undimensioned. No copper routing or electrical behavior is supplied. The Pi 5 reference explicitly describes approximate dimensions for reference, not production. Check a physical board for final enclosure clearances; modeled connector internal details are visual representations. 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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Raspberry Pi 4 Model B layoutRaspberry Pi 4 Model B layout, modeled from published dimensions. Overall 88 x 58.5 x 20.6 mm. Key dimensions: corner radius 3 mm; gpio pitch 2.5 mm; gpio row spacing 2.5 mm. PCB outline, four mounting holes, GPIO grid and dimensioned port centerlines follow the official mechanical drawing. Geometry is an original reconstruction; connector depths, small component footprints, SD housing, shell gauges and PCB thickness are nominal where undimensioned. No copper routing or electrical behavior is supplied. The Pi 5 reference explicitly describes approximate dimensions for reference, not production. Check a physical board for final enclosure clearances; modeled connector internal details are visual representations. 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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Unbranded V8 engine assemblyUnbranded V8 engine assembly, modeled from published dimensions. Overall 683.9 x 600 x 400 mm. Key dimensions: cylinders 8; bank angle deg 90; bore diameter 80 mm; cylinder pitch 100 mm; crank axis height 150 mm; block length 450 mm. Original dimensioned V8 exterior assembly with eight cylinder barrels, two heads and ribbed valve covers, intake runners/plenum, two four-branch exhaust manifolds, oil pan/filter, flywheel and front accessories. This is an unbranded packaging and visualization design. Internal crank throws, pistons, rods, valves, timing drive, wiring and coolant passages are omitted; shaft, throttle and accessory internals are simplified. No engine displacement, performance or production-fit claim is made. 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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Six-axis industrial robot with gripperSix-axis industrial robot with gripper, modeled from published dimensions. Overall 953.4 x 365 x 904.3 mm. Key dimensions: rotary axes 6; base diameter 320 mm; base mount PCD 260 mm; base hole diameter 14.4 mm; upper arm pivot length 406.1 mm; forearm pivot length 345.4 mm; gripper opening 38 mm. Original unbranded six-axis robot layout with mounting base, yaw fork, upper arm, offset forearm, roll/pitch/roll wrist and parallel gripper. Six joint origins and directions are included in parameters.json; named CAD/Blender components remain editable. Shown in one static pose with geometric assembly clearance. Motor windings, reducers, cabling, encoders and controller are omitted. This is a dimensioned layout design, not a manufacturer robot, load-rated mechanism or automatically constrained motion rig. 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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ANSI #40 10-pitch chain segmentANSI #40 10-pitch chain segment, modeled from published dimensions. Overall 139 x 12 x 14.3 mm. Key dimensions: chain size 40; pitch 12.7 mm; roller or bush diameter 7.9 mm; inner width 8 mm; pin diameter 4 mm; plate thickness 1.5 mm. Chain pitch, roller/bush diameter and inner width follow Tsubaki published ANSI dimensions. Number 25 is a bush chain, with no independent roller; the pictured sleeve represents the bush. Original sprocket blanks use chordal pitch-circle geometry and circular roller seats with 0.08 mm radial clearance. Tooth-tip/flank entry contours and chain plate waists are simplified; this is an installation/layout model, not a production hob profile or rated drive. Pins, sleeves and alternating plates remain separately editable. 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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ANSI #40 24t sprocketANSI #40 24t sprocket, modeled from published dimensions. Overall 103.6 x 103.6 x 12.6 mm. Key dimensions: chain size 40; pitch 12.7 mm; roller or bush diameter 7.9 mm; inner width 8 mm; pin diameter 4 mm; plate thickness 1.5 mm; teeth 24. Chain pitch, roller/bush diameter and inner width follow Tsubaki published ANSI dimensions. Number 25 is a bush chain, with no independent roller; the pictured sleeve represents the bush. Original sprocket blanks use chordal pitch-circle geometry and circular roller seats with 0.08 mm radial clearance. Tooth-tip/flank entry contours and chain plate waists are simplified; this is an installation/layout model, not a production hob profile or rated drive. Pins, sleeves and alternating plates remain separately editable. 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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ANSI #40 16t sprocketANSI #40 16t sprocket, modeled from published dimensions. Overall 70.8 x 70.8 x 12.6 mm. Key dimensions: chain size 40; pitch 12.7 mm; roller or bush diameter 7.9 mm; inner width 8 mm; pin diameter 4 mm; plate thickness 1.5 mm; teeth 16. Chain pitch, roller/bush diameter and inner width follow Tsubaki published ANSI dimensions. Number 25 is a bush chain, with no independent roller; the pictured sleeve represents the bush. Original sprocket blanks use chordal pitch-circle geometry and circular roller seats with 0.08 mm radial clearance. Tooth-tip/flank entry contours and chain plate waists are simplified; this is an installation/layout model, not a production hob profile or rated drive. Pins, sleeves and alternating plates remain separately editable. 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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ANSI #25 10-pitch chain segmentANSI #25 10-pitch chain segment, modeled from published dimensions. Overall 69.3 x 5.8 x 6.5 mm. Key dimensions: chain size 25; pitch 6.4 mm; roller or bush diameter 3.3 mm; inner width 3.2 mm; pin diameter 2.3 mm; plate thickness 0.8 mm. Chain pitch, roller/bush diameter and inner width follow Tsubaki published ANSI dimensions. Number 25 is a bush chain, with no independent roller; the pictured sleeve represents the bush. Original sprocket blanks use chordal pitch-circle geometry and circular roller seats with 0.08 mm radial clearance. Tooth-tip/flank entry contours and chain plate waists are simplified; this is an installation/layout model, not a production hob profile or rated drive. Pins, sleeves and alternating plates remain separately editable. 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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ANSI #25 24t sprocketANSI #25 24t sprocket, modeled from published dimensions. Overall 51.8 x 51.8 x 7.8 mm. Key dimensions: chain size 25; pitch 6.4 mm; roller or bush diameter 3.3 mm; inner width 3.2 mm; pin diameter 2.3 mm; plate thickness 0.8 mm; teeth 24. Chain pitch, roller/bush diameter and inner width follow Tsubaki published ANSI dimensions. Number 25 is a bush chain, with no independent roller; the pictured sleeve represents the bush. Original sprocket blanks use chordal pitch-circle geometry and circular roller seats with 0.08 mm radial clearance. Tooth-tip/flank entry contours and chain plate waists are simplified; this is an installation/layout model, not a production hob profile or rated drive. Pins, sleeves and alternating plates remain separately editable. 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.
435 KBDetails & downloadstepRotate in 3D
ANSI #25 16t sprocketANSI #25 16t sprocket, modeled from published dimensions. Overall 35.5 x 35.5 x 7.8 mm. Key dimensions: chain size 25; pitch 6.4 mm; roller or bush diameter 3.3 mm; inner width 3.2 mm; pin diameter 2.3 mm; plate thickness 0.8 mm; teeth 16. Chain pitch, roller/bush diameter and inner width follow Tsubaki published ANSI dimensions. Number 25 is a bush chain, with no independent roller; the pictured sleeve represents the bush. Original sprocket blanks use chordal pitch-circle geometry and circular roller seats with 0.08 mm radial clearance. Tooth-tip/flank entry contours and chain plate waists are simplified; this is an installation/layout model, not a production hob profile or rated drive. Pins, sleeves and alternating plates remain separately editable. 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.
293 KBDetails & downloadstepRotate in 3D
Rigid coupling, 8 to 8 mmRigid coupling, 8 to 8 mm, modeled from published dimensions. Overall 20 x 20 x 25 mm. Key dimensions: bore 1 8 mm; bore 2 8 mm; outside diameter 20 mm; length 25 mm; bore transition z 12.5 mm; shaft engagement 12.5 mm; set screws 4 x M4, cylindrical thread envelopes. Original library coupling, not a dimensional copy of a Ruland product. The reference describes the rigid set-screw coupling class. Exact nominal bores, engagement and screw locations are in the parameters. Thread forms, shaft indentation and tightening deformation are omitted. No torque capacity, speed rating, fatigue life or manufacturing tolerances are 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.
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Rigid coupling, 5 to 8 mmRigid coupling, 5 to 8 mm, modeled from published dimensions. Overall 20 x 20 x 25 mm. Key dimensions: bore 1 5 mm; bore 2 8 mm; outside diameter 20 mm; length 25 mm; bore transition z 12.5 mm; shaft engagement 12.5 mm; set screws 4 x M4, cylindrical thread envelopes. Original library coupling, not a dimensional copy of a Ruland product. The reference describes the rigid set-screw coupling class. Exact nominal bores, engagement and screw locations are in the parameters. Thread forms, shaft indentation and tightening deformation are omitted. No torque capacity, speed rating, fatigue life or manufacturing tolerances are 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.
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Helical coupling, 8 to 8 mmHelical coupling, 8 to 8 mm, modeled from published dimensions. Overall 25 x 25 x 30 mm. Key dimensions: bore 1 8 mm; bore 2 8 mm; outside diameter 25 mm; length 30 mm; bore transition z 15 mm; hub shaft engagement 8 mm; slit pitch 3.2 mm; slit turns 3; slit axial width 0.7 mm; clamp screws 2 x M3, cylindrical thread envelopes. Original parametric helical-beam coupling. The continuous 3-turn cut joins two slotted clamp hubs in one solid; declared dimensions are library design choices, not vendor specifications. The model is shown unstressed. Beam strength, torsional stiffness, misalignment capacity and fatigue life have not been calculated. Thread forms and tightening deformation are omitted. Shaft insertion should remain within the 8 mm end hubs. 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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Helical coupling, 5 to 8 mmHelical coupling, 5 to 8 mm, modeled from published dimensions. Overall 25 x 25 x 30 mm. Key dimensions: bore 1 5 mm; bore 2 8 mm; outside diameter 25 mm; length 30 mm; bore transition z 15 mm; hub shaft engagement 8 mm; slit pitch 3.2 mm; slit turns 3; slit axial width 0.7 mm; clamp screws 2 x M3, cylindrical thread envelopes. Original parametric helical-beam coupling. The continuous 3-turn cut joins two slotted clamp hubs in one solid; declared dimensions are library design choices, not vendor specifications. The model is shown unstressed. Beam strength, torsional stiffness, misalignment capacity and fatigue life have not been calculated. Thread forms and tightening deformation are omitted. Shaft insertion should remain within the 8 mm end hubs. 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.
553 KBDetails & download
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