American Standard Vandal Proof Aerator 2.2 GPM with 15/64 x 27-in. Male Threads - AMS-78481

Male threads, 15/64 x 27. That means it threads into a spout with internal (female) threads. If your faucet spout has external threads on the tip, you need a female-threaded aerator instead, not this one.

A vandal proof aerator is removed with a special key rather than by hand or pliers, so it does not get unscrewed and walked off in a public washroom. That is exactly the use case for it: schools, transit, parks, stadium and institutional restrooms where standard aerators disappear. The American Standard unit is brass bodied and threads in as a direct faucet repair part.

It fits any spout with matching 15/64 x 27 internal threads, regardless of brand. Aerator threads are not brand-specific, they are sized. Measure or test-fit the spout opening first, because the other common sizes (15/16-27 male and 55/64-27 female) will not engage these threads at all.

2.2 GPM. That is the standard full-flow rate for a kitchen or utility faucet. If you are chasing a low-flow requirement for a lavatory, 2.2 GPM will not get you there, so look for a 1.5 or 0.5 GPM aerator instead.

Brass. For a high-traffic or commercial faucet that is the point, a plastic aerator housing cracks when someone leans on it or attacks it with pliers. Chrome is the finish offered.

Yes, vandal resistant aerators are seated and removed with a matching key, not a wrench. Order the key alongside the aerator if your maintenance crew does not already stock one, otherwise you will not be able to pull the unit to clean the screen when it clogs with scale.

Yes, provided the spouts all take 15/64 x 27 male-thread aerators. That is the practical check before you buy in quantity: pull one existing aerator from each faucet model in the building and confirm the thread. Mixed faucet fleets often carry two or three different aerator threads, and a single order will not cover all of them.