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
TO-92 Package Semiconductor Component
ELECTRICAL · TO-92

TO-92 Package Semiconductor Component

.STEP
Free
SOT Package Housings for Diodes, Transistors, and ICs with 3 to 8 Pins
ELECTRICAL · SOT PACKAGE

SOT Package Housings for Diodes, Transistors, and ICs with 3 to 8 Pins

.STEP
Free
HY-SRF05 Ultrasonic Sensor Module for Distance Measurement
ROBOTICS · HY-SRF05

HY-SRF05 Ultrasonic Sensor Module for Distance Measurement

.STEP
Free
ABB S202 C32 Circuit Breaker CAD Model
ELECTRICAL · ABB S202 C32

ABB S202 C32 Circuit Breaker CAD Model

.STEP

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Mounting Plate 3PS19-8 OST 107.680225.001-86 Industrial Component
MACHINE DESIGN · MOUNTING PLATE

Mounting Plate 3PS19-8 OST 107.680225.001-86 Industrial Component

.STEP
Free
Centrifugal Fan with AC Backward-Curved Motorized Impeller 225mm Round 230VAC 756CFM
INDUSTRIAL DESIGN · CENTRIFUGAL FAN

Centrifugal Fan with AC Backward-Curved Motorized Impeller 225mm Round 230VAC 756CFM

.STEP
Free
Screw Terminal Breakout Shields for Arduino Mega 2560
ELECTRICAL · SCREW TERMINAL BREAKOUT SHIELD

Screw Terminal Breakout Shields for Arduino Mega 2560

.STEP
Free
Type C Male Connector GT-USB-8016A Technical Model
ELECTRICAL · TYPE C CONNECTOR

Type C Male Connector GT-USB-8016A Technical Model

.STEP
Free
Protective Cover Type 2 Version 3 for M30x1.5 Threaded Connectors GOST 25930-83
ELECTRICAL · PROTECTIVE COVER

Protective Cover Type 2 Version 3 for M30x1.5 Threaded Connectors GOST 25930-83

.STEP
Free
2.54mm Pitch Pin Headers with Jumpers
ELECTRICAL · 2.54MM PITCH

2.54mm Pitch Pin Headers with Jumpers

.STEP
Free
DC Linear Actuator with Built-In End Switches for Precise Control
MACHINE DESIGN · DC LINEAR ACTUATOR

DC Linear Actuator with Built-In End Switches for Precise Control

.STEP
Free
Computer Cooling Fan for Electronic Devices
ELECTRICAL · COOLING FAN

Computer Cooling Fan for Electronic Devices

.STEP
Free
IDEC 22mm Switches and Pilot Lights - Emergency Stop and Alternate Type Button
ELECTRICAL · IDEC 22MM

IDEC 22mm Switches and Pilot Lights - Emergency Stop and Alternate Type Button

.STEP
Free
Spotpear Audio Module B CAD Model for Enclosure Design
ELECTRICAL · SPOTPEAR AUDIO MODULE B

Spotpear Audio Module B CAD Model for Enclosure Design

.STEP
Free
Low Voltage Epoxy Cast Current Transformer for AC Current Measurement
ELECTRICAL · CURRENT TRANSFORMER

Low Voltage Epoxy Cast Current Transformer for AC Current Measurement

.STEP
Free
Miniature Double-Break Microswitch with Plain Plunger by Saia-Burgess
ELECTRICAL · MICROSWITCH

Miniature Double-Break Microswitch with Plain Plunger by Saia-Burgess

.STEP
Free
Contactor with Overload Relay Assembly
ELECTRICAL · CONTACTOR

Contactor with Overload Relay Assembly

.STEP
Free
Amphenol 16-25mm2 SURLOK 90 Degree Connector 5.7mm Black
ELECTRICAL · AMPHENOL SURLOK

Amphenol 16-25mm2 SURLOK 90 Degree Connector 5.7mm Black

.STEP
Free
Amphenol SURLOK Busbar 5.7mm Black - Electrical Connector Component
ELECTRICAL · AMPHENOL SURLOK

Amphenol SURLOK Busbar 5.7mm Black - Electrical Connector Component

.STEP
Free
Amphenol SURLOK 5.7mm Red Busbar Connector
ELECTRICAL · AMPHENOL SURLOK

Amphenol SURLOK 5.7mm Red Busbar Connector

.STEP
Free
Simulated Racing Car Dashboard Display with LED Indicators
AUTOMOTIVE · RACING CAR DASHBOARD

Simulated Racing Car Dashboard Display with LED Indicators

.STEP
Free
90 Degree Sorting Conveyor with Rollers and Dual Motors
INDUSTRIAL DESIGN · 90 DEGREE SORTING CONVEYOR

90 Degree Sorting Conveyor with Rollers and Dual Motors

.STEP