A Stub 90 is a type of electrical conduit fitting that plays a crucial role in organizing and protecting electrical wires and cables. This versatile component is widely used in various electrical installations, from residential homes to commercial buildings and industrial facilities. Let's dive into the details of Stub 90, its importance, and its applications in the world of electrical engineering.

To understand the Stub 90, it's essential to familiarize ourselves with the broader spectrum of electrical conduit fittings. Conduit fittings are devices that allow for the bending, turning, and splicing of electrical conduit, enabling the creation of safe and efficient electrical pathways. The Stub 90, in particular, facilitates the extension and modification of electrical conduit runs, making it a staple in any electrician's toolbox.

Understanding Stub 90: Design and Functionality
The Stub 90 consists of a straight, tubular body with internal threading on both ends. Its primary function is to provide a female-to-female connection, allowing for the extension of electrical conduit runs while maintaining the integrity of the electrical system. Here's a closer look at its design and functionality:

Tubular Body
The Stub 90's tubular body is typically made of steel, polyvinyl chloride (PVC), or other durable materials, ensuring its longevity and resistance to environmental factors. The smooth, round shape of the body allows for easy installation and optimal cable management.

Internal Threading
The internal threading on both ends of the Stub 90 enables it to accommodate and securely connect to other conduit fittings, such as nipples, couplings, and elbows. This threading ensures a tight, water-resistant seal, preventing short circuits or other electrical hazards due to moisture or debris.
Applications and Uses of Stub 90

The Stub 90's simplicity and versatility make it an indispensable tool for electricians, enabling them to tackle a wide range of electrical installations and repairs. Here are some of its primary applications:
Conduit Extension
The most elementary use of the Stub 90 is to extend the length of a conduit run. A single Stub 90 can connect two sections of conduit, while multiple Stub 90s can create long, continuous runs, ensuring Electrical equipment remains secure and easily accessible.

Creating 90-Degree Turns
Combined with other fittings like elbows, the Stub 90 can help create 90-degree turns in electrical conduit runs. This flexibility allows electricians to route conduit through tight spaces, around corners, or through walls and ceilings with ease.










In the world of electrical engineering, every connection matters, and the Stub 90 plays a pivotal role in ensuring those connections are secure, efficient, and well-organized. From residential homes to sprawling industrial facilities, this humble fitting has a significant impact on the safety and reliability of our electrical systems. As electrical demand continues to grow, so too will the importance of components like the Stub 90. Embracing cutting-edge technologies and maintaining a deep understanding of time-tested tools, such as the Stub 90, will remain paramount for professionals in the electrical industry.