Internal And External Threaded Nuts

Threaded nuts are essential components in fastening systems, and they can be categorized into two main types: internal and external threaded nuts.

Internal Threaded Nuts
Definition: Internal threaded nuts have internal threads designed to fit onto a bolt or screw.
Common Types:
Hex Nuts: Standard nuts with six sides, commonly used for fastening.
Lock Nuts: Designed to resist loosening under vibration.
Wing Nuts: Feature “wings” for easy hand tightening.
Cap Nuts: Have a closed end to cover the exposed end of a bolt.
Applications: Used in a variety of applications, from machinery to construction, where a secure fastening is needed.
External Threaded Nuts
Definition: External threaded nuts have external threads and are typically used as a fastener in conjunction with a corresponding internal threaded component.
Common Types:
Studs: Rods with threads on both ends, often used in tension applications.
Set Screws: Screws used to secure an object within or against another object without requiring a nut.
Applications: Commonly found in applications where adjustable or removable fastening is required.
Key Differences
Thread Orientation: Internal nuts have threads on the inside, while external nuts have threads on the outside.
Use Cases: Internal nuts are typically used directly with bolts, while external nuts can be part of assemblies that require studs or other components.
Conclusion
Both internal and external threaded nuts play critical roles in assembling and securing components across various industries. Their selection depends on the specific requirements of the application, including load, vibration resistance, and ease of assembly.