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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The axis engineers actually search on — pick a part type to filter the catalog.

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Build kits

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.

9 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.

10 partspairs verified
HARDWARE

Metric Fasteners & Threaded Hardware Pack

A reusable ISO/metric fastener library cluster with screws, nuts, washers, inserts, standoffs and bolt assemblies.

6 partspairs verified
3D PRINTING

3D Printer Motion & Extruder Upgrade Kit

A 3D-printer upgrade cluster combining hotend parts, filament handling, stepper drive and motion hardware.

14 partspairs verified
ELECTRONICS PROTOTYPING

Arduino / ESP32 Prototyping Kit

A maker electronics cluster with Arduino, ESP32, breadboard, shield, servo, battery holder and enclosure.

13 partspairs verified
ROBOTICS

Robotic Arm + Gripper Kit

A robotic manipulator cluster with 6-DOF arm, gripper, wrist, servo mounts, actuator and linear guide components.

12 partspairs verified
CNC MACHINING

CNC Workholding & Tooling Kit

A CNC machining cluster covering table, clamping, vise, chuck, collet holder, spindle and ball-screw motion.

14 partspairs verified
HVAC / DUCTING

HVAC Ventilation Duct Assembly Kit

A ventilation product cluster with grille, damper, duct adapter, fan, filter, flange and duct clamp.

8 partspairs verified
FLUID POWER

Hydraulic / Pneumatic Pump & Valve Manifold Kit

A fluid-power cluster combining pump, valves, pressure gauge, manifold block, pipe and coupling parts.

16 partspairs verified
MOBILE ROBOTICS

RC / Line-Follower Robot Chassis Kit

A small mobile-robot cluster with chassis, wheels, hubs, motors, motor mounts, controller, battery holder and damper.

16 partspairs verified
WORKSPACE ACCESSORIES

Desk Cable + Phone Stand Workstation Kit

A desk-organization product cluster combining cable routing, phone holders, headphone stands and laptop/iMac stands.

8 partspairs verified
CAMERA / IMAGING RIGS

Camera Gimbal & Mount Rig Kit

A camera-rig cluster with gimbal, camera modules, tripod, tilt head, GoPro mount and camera bracket parts.

8 partspairs verified
AUTOMOTIVE & MOBILITY

1:10 RC Car Drivetrain & Suspension Kit

A 1:10 RC Car Drivetrain & Suspension Kit cluster covering related CAD components for Automotive & Mobility.

5 partspairs verified
ROBOTICS & MECHATRONICS

Arduino / ESP32 Prototyping Kit; CNC Workholding & Tooling Kit

A Arduino / ESP32 Prototyping Kit; CNC Workholding & Tooling Kit cluster covering related CAD components for Robotics & Mechatronics.

1 partpairs verified
MOTORS & POWER TRANSMISSION

Arduino / ESP32 Prototyping Kit; RC / Line-Follower Robot Chassis Kit

A Arduino / ESP32 Prototyping Kit; RC / Line-Follower Robot Chassis Kit cluster covering related CAD components for Motors & Power Transmission.

1 partpairs verified
HYDRAULICS & PNEUMATICS

Belt & Roller Conveyor Design Kit

A Belt & Roller Conveyor Design Kit cluster covering related CAD components for Hydraulics & Pneumatics.

9 partspairs verified
PUMPS & FLUID SYSTEMS

Centrifugal Pump & Motor Skid Kit

A Centrifugal Pump & Motor Skid Kit cluster covering related CAD components for Pumps & Fluid Systems.

8 partspairs verified
GENERAL ENGINEERING

Honda C-Series Engine Parts Pack

A Honda C-Series Engine Parts Pack cluster covering related CAD components for General Engineering.

4 partspairs verified
VALVES & FLOW CONTROL

Hydraulic / Pneumatic Pump & Valve Manifold Kit; Industrial Valve & Actuation Pack

A Hydraulic / Pneumatic Pump & Valve Manifold Kit; Industrial Valve & Actuation Pack cluster covering related CAD components for Valves & Flow Control.

1 partpairs verified
ENCLOSURES & PANELS

IP65/IP67 Electrical Enclosure & Control Panel Pack

A IP65/IP67 Electrical Enclosure & Control Panel Pack cluster covering related CAD components for Enclosures & Panels.

9 partspairs verified
GENERAL ENGINEERING

Industrial Gearmotor & Drive Kit

A Industrial Gearmotor & Drive Kit cluster covering related CAD components for General Engineering.

9 partspairs verified
VALVES & FLOW CONTROL

Industrial Valve & Actuation Pack

A Industrial Valve & Actuation Pack cluster covering related CAD components for Valves & Flow Control.

9 partspairs verified
PUMPS & FLUID SYSTEMS

Peristaltic / Dosing Pump Prototyping Kit

A Peristaltic / Dosing Pump Prototyping Kit cluster covering related CAD components for Pumps & Fluid Systems.

9 partspairs verified
ROBOTICS & MECHATRONICS

Raspberry Pi Case & Display Kit

A Raspberry Pi Case & Display Kit cluster covering related CAD components for Robotics & Mechatronics.

6 partspairs verified
ENGINES & POWERTRAIN

Superquadro Engine Internals Kit

A Superquadro Engine Internals Kit cluster covering related CAD components for Engines & Powertrain.

4 partspairs verified
PUMPS & FLUID SYSTEMS

Vacuum Pump System Pack

A Vacuum Pump System Pack cluster covering related CAD components for Pumps & Fluid Systems.

9 partspairs verified
10,000+ models2D drawings
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Free
Hex Nut CAD Model for Mechanical Assemblies
MACHINE DESIGN · HEX NUT

Hex Nut CAD Model for Mechanical Assemblies

.STEP
Free
Sealing O-Ring with 5 mm Inner Diameter and 1.8 mm Cross Section
INDUSTRIAL DESIGN · O-RING

Sealing O-Ring with 5 mm Inner Diameter and 1.8 mm Cross Section

.STEP
Free
Educational Gear Transmission Assembly Model for Engineering Learning
MACHINE DESIGN · GEAR TRANSMISSION

Educational Gear Transmission Assembly Model for Engineering Learning

.STEP
Free
Wheel Adapter for 5x112 to 4x100 Bolt Pattern Conversion
AUTOMOTIVE · WHEEL ADAPTER

Wheel Adapter for 5x112 to 4x100 Bolt Pattern Conversion

.STEP

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Agricultural Tire 5.00-8 with 3.00-8 Metal Sheet Rim
AUTOMOTIVE · AGRICULTURAL TIRE

Agricultural Tire 5.00-8 with 3.00-8 Metal Sheet Rim

.STEP
Free
Gokart Brake Pump Model K225 Replica
AUTOMOTIVE · GOKART

Gokart Brake Pump Model K225 Replica

.STEP
Free
Cast Metal Industrial Component
INDUSTRIAL DESIGN · CAST METAL

Cast Metal Industrial Component

.STEP
Free
Centering Component for Movable Shaft Stabilization
MACHINE DESIGN · SHAFT STABILIZATION

Centering Component for Movable Shaft Stabilization

.STEP
Free
Centering Arm for Short Steel Connecting Pins
MACHINE DESIGN · CENTERING ARM

Centering Arm for Short Steel Connecting Pins

.STEP
Free
Accessory for Shaft and Pipe Mounting to Wall or Floor
INDUSTRIAL DESIGN · SHAFT MOUNTING

Accessory for Shaft and Pipe Mounting to Wall or Floor

.STEP
Free
Pipe and Solid Material Shaft Fixing Clamp for Construction and Installation Systems
CONSTRUCTION · PIPE CLAMP

Pipe and Solid Material Shaft Fixing Clamp for Construction and Installation Systems

.STEP
Free
Corner Connector Fastener for Construction Materials
CONSTRUCTION · CORNER CONNECTOR

Corner Connector Fastener for Construction Materials

.STEP
Free
Engineering Internship Project Model by PT DTECH-ENGINEERING
MACHINE DESIGN · ENGINEERING INTERNSHIP PROJECT

Engineering Internship Project Model by PT DTECH-ENGINEERING

.STEP
Free
Truck Loading Ramp with Dual Cylinder Mechanism Concept Model
MACHINE DESIGN · TRUCK LOADING RAMP

Truck Loading Ramp with Dual Cylinder Mechanism Concept Model

.STEP
Free
Industrial Mechanical Component
MACHINE DESIGN · MECHANICAL COMPONENT

Industrial Mechanical Component

.STEP
Free
Industrial Mechanical Component
MACHINE DESIGN · INDUSTRIAL MECHANICAL COMPONENT

Industrial Mechanical Component

.STEP
Free
Exhaust Manifold for Internal Combustion Engines
AUTOMOTIVE · EXHAUST MANIFOLD

Exhaust Manifold for Internal Combustion Engines

.STEP
Free
Educational Exercise CAD Model
EDUCATIONAL

Educational Exercise CAD Model

.STEP
Free
Internal Gear Pump CAD Model for Industrial Applications
MACHINE DESIGN · INTERNAL GEAR PUMP

Internal Gear Pump CAD Model for Industrial Applications

.STEP
Free
Generic Windshield Washer Kit Assembly CAD Model
AUTOMOTIVE · WINDSHIELD WASHER KIT

Generic Windshield Washer Kit Assembly CAD Model

.STEP
Free
17 Inch Rim Basic Design CAD Model
AUTOMOTIVE · 17 INCH RIM

17 Inch Rim Basic Design CAD Model

.STEP
Free
Automotive and Mechanical Engineering Component
AUTOMOTIVE · MECHANICAL COMPONENT

Automotive and Mechanical Engineering Component

.STEP