Faucet aerator sizes and installation

Understanding faucet aerator sizes and installation


When selecting a faucet aerator, it's imperative to know the common thread sizes to ensure a perfect fit for your residential faucets in the United States. The most widely used size is 55/64"-27, with "-27" signifying the number of threads per inch, making it a crucial feature for those in need of standard-sized faucet aerators.

An effortless method involves the use of coins. A quarter will size a "55/64" aerator(Hirator faucet aerator size), while a nickel fits the dimensions for 13/16".

Identifying thread gender and hidden aerator sizes


To further understand the mechanics, it's important to note that threads are gendered. If your faucet has external threads, it is male, suitable for a female aerator (Hirator Standard). Conversely, if your faucet has internal threads, it is female, suitable for a male aerator (you can choose our adapter).

In addition to inch measurements, "hidden" aerators are prevalent in the United States, coming in metric sizes of 16.5mm, 18.5mm, 21.5mm, and 24mm. These hidden aerators are meticulously designed to enhance aesthetics and reduce the likelihood of theft, as they can't be removed sans a specialized key. Don’t worry, the Hirator faucet aerator comes with a key in every package.

While less common in the U.S., metric sizes such as 16mm, 18mm, 20mm, and 22mm are standard in Asian markets; hence, if your faucets are imported from China, Japan, Taiwan, or similar countries, they might feature these whole number metric sizes.

Removing and swapping out faucet aerators


The removal process for aerators involves standard right-hand threads. While an upside-down perspective from within the sink would entail a counterclockwise motion for disassembly, a more practical approach is to position yourself above the faucet and twist the aerator clockwise to remove it.

Metric vs. inch size considerations for faucet aerators


An intriguing aspect of aerator sizes is their compatibility across measurement systems. The size 55/64" might seem arbitrary, yet 55/64"-27 is functionally equivalent to 22mm x 1, making them completely interchangeable for ease of use and replacement.

By understanding these specifics about faucet aerator sizes, threading, and the intricacies of hidden aerators, you can ensure a secure and aesthetically pleasing fit for any standard U.S. faucet. Hirator faucet aerator are made in U.S. standard sizes, so you can buy with confidence.


Shop for your Hirator faucet aerator now.