Engineering CAD Design Library

Browse quality-checked 3D CAD models for engineering, product design, prototyping and manufacturing. Preview models online and download files in STEP, STP, IGES, STL, OBJ, PLY, DWG, DXF and more.

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Curated systems with verified mating parts — download the whole assembly at once.

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CONSUMER ELECTRONICS

iPhone Accessory & Case Design Kit

A practical iPhone accessory cluster for designing cases, charging stands, holders and fit-checking around real phone geometry.

6 partspairs verified
DRONES / UAV

250 mm FPV Drone Build Kit

A complete FPV quad build cluster covering frame, propulsion, camera, control electronics, battery housing and mounting hardware.

7 partspairs verified
MOTION CONTROL

NEMA 17 Motion / Linear Actuator Kit

A motion-control cluster around a NEMA 17 stepper, bracket, coupler, GT2 belt, pulley, bearing and driver.

5 partspairs verified
10,000+ models2D drawings
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Free
DSCDXS Industrial Component
MACHINE DESIGN · DSCDXS

DSCDXS Industrial Component

.STEP
Free
Quartz Crystal HC-49SMD 3D Model for Electronic Applications
ELECTRICAL · QUARTZ CRYSTAL

Quartz Crystal HC-49SMD 3D Model for Electronic Applications

.STEP
Free
Positioning Spring Pin GP-2T with 5mm and 7mm Body Sizes
MACHINE DESIGN · POSITIONING SPRING PIN GP-2T

Positioning Spring Pin GP-2T with 5mm and 7mm Body Sizes

.STEP
Free
LM2596 Dual USB DC-DC Buck Converter Board
ELECTRICAL · LM2596

LM2596 Dual USB DC-DC Buck Converter Board

.STEP

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Infineon TO247 Package Variants 3D Models
ELECTRICAL · INFINEON

Infineon TO247 Package Variants 3D Models

.STEP
Free
Mega Sumo Competition Robot Representing Chile in International Tournament
ROBOTICS · MEGA SUMO ROBOT

Mega Sumo Competition Robot Representing Chile in International Tournament

.STEP
Free
Mounting Plate 3PS19-6 OST 107.680225.001-86 Industrial Component
MACHINE DESIGN · MOUNTING PLATE

Mounting Plate 3PS19-6 OST 107.680225.001-86 Industrial Component

.STEP
Free
PMAFIX M32x1.5 Straight Connector with Universal Safety Clip and Cable Gland
ELECTRICAL · PMAFIX M32X1.5

PMAFIX M32x1.5 Straight Connector with Universal Safety Clip and Cable Gland

.STEP
Free
WEEE Symbol for Electrical and Electronic Equipment Waste
ELECTRICAL · WEEE SYMBOL

WEEE Symbol for Electrical and Electronic Equipment Waste

.STEP
Free
Protective Cover for M30x1.5 Threaded Connectors GOST 25930-83
INDUSTRIAL DESIGN · PROTECTIVE COVER

Protective Cover for M30x1.5 Threaded Connectors GOST 25930-83

.STEP
Free
Engineering Component Progress Update
MACHINE DESIGN · ENGINEERING COMPONENT

Engineering Component Progress Update

.STEP
Free
Magnetic PCB Holder with Adjustable Spring Force for Secure Circuit Board Support
ELECTRICAL · PCB HOLDER

Magnetic PCB Holder with Adjustable Spring Force for Secure Circuit Board Support

.STEP
Free
Siemens Sinamics BOP-2 Panel Operator 6SL3055-0AA00-4BA0
INDUSTRIAL DESIGN · SIEMENS SINAMICS BOP-2

Siemens Sinamics BOP-2 Panel Operator 6SL3055-0AA00-4BA0

.STEP
Free
AD620 Instrumentation Amplifier Module CAD Model
ELECTRICAL · AD620

AD620 Instrumentation Amplifier Module CAD Model

.STEP
Free
Capacitive Soil Moisture Sensor CAD Model for Engineering Applications
INDUSTRIAL DESIGN · CAPACITIVE SOIL MOISTURE SENSOR

Capacitive Soil Moisture Sensor CAD Model for Engineering Applications

.STEP
Free
MORNSUN VRBxxxxS-6WR3 DC-DC Converter Module
ENERGY AND POWER · DC-DC CONVERTER

MORNSUN VRBxxxxS-6WR3 DC-DC Converter Module

.STEP
Free
XL6019 Bipolar Power Supply Module CAD Model
ELECTRICAL · XL6019

XL6019 Bipolar Power Supply Module CAD Model

.STEP
Free
TEM-CELL Inspired Engineering Project Model
INDUSTRIAL DESIGN · TEM-CELL

TEM-CELL Inspired Engineering Project Model

.STEP
Free
Remote I/O Module RS485 with 4 Analog RTD Inputs
INDUSTRIAL DESIGN · REMOTE I/O MODULE

Remote I/O Module RS485 with 4 Analog RTD Inputs

.STEP
Free
Remote I/O Module RS485 with 8 Current Analog Inputs 16-bit
ELECTRICAL · REMOTE I/O MODULE

Remote I/O Module RS485 with 8 Current Analog Inputs 16-bit

.STEP
Free
Freenove ESP32-S3-WROOM Development Board 3D Model
ELECTRICAL · ESP32-S3-WROOM

Freenove ESP32-S3-WROOM Development Board 3D Model

.STEP
Free
Street Light Design for Urban Infrastructure
CONSTRUCTION · STREET LIGHT

Street Light Design for Urban Infrastructure

.STEP