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What Is an External Threaded Faucet?

Published in Faucet Threading 2 mins read

An external threaded faucet is a type of faucet where the threads designed for connecting accessories like aerators or hoses are located on the outside of the faucet spout. According to plumbing standards and common terminology, if your faucet has threads on the outside, it is also known as male threaded.

Understanding the threading on your faucet is crucial, especially when you need to attach components such as a new aerator. The threading type dictates the kind of connector you'll need for compatibility. For example, the provided reference explicitly states:

If your kitchen faucet has threads on the outside, it is male threaded - which means you need to buy a FEMALE threaded aerator to fit over it.

This means an external, or male, thread requires a female threaded component to screw onto it. The female threading is located on the inside of the accessory.

Identifying Your Faucet Thread Type

Knowing whether your faucet has external or internal threads is essential before purchasing replacement parts or accessories.

Here are simple ways to check:

  • Visual Inspection: Look closely at the tip of the faucet spout. If you can see the ridges (threads) on the very outer surface, it is external (male) threaded. If the tip is smooth on the outside and the threads are hidden inside the spout opening, it's internal (female) threaded.
  • Touch Test: Carefully feel the tip of the spout. You can usually feel the distinct texture of the threads if they are on the outside.

Thread Compatibility Overview

Matching the thread types correctly ensures a secure, leak-free connection. Here's a simple breakdown:

Faucet Thread Type Threads Location Required Accessory Thread Type Accessory Threads Location
External (Male) Outside Female Inside
Internal (Female) Inside Male Outside

In summary, an external threaded faucet features threads on the outside of its spout. This configuration is referred to as male threading and requires accessories, such as aerators or adapters, that have corresponding female threading to connect properly.