American Standard Nut Westmere -Ref A30001-016 - AMS-M962661

It's a fastener for American Standard faucets, part of the Westmere line and referenced as A30001-016. The orderable manufacturer number is M962661-0070A. It's a replacement nut, not a complete assembly, so you're buying it to put a faucet back together or to replace one that stripped or corroded.

It's sold for use on American Standard kitchen faucets, but you need to check your specific faucet model before ordering. American Standard part numbers are model-specific, so match the reference number A30001-016 (or M962661-0070A) against your faucet's parts breakdown rather than assuming it fits because the brand matches.

No finish options here. The Westmere nut ships in a single no-finish version, which is normal for a fastener that sits under the deck or inside the faucet body where it isn't visible. If you're chasing a visible trim piece to match brushed nickel or chrome, this isn't it.

It's the nut on its own. If your repair also needs a seal, washer, or mounting bracket, those are separate American Standard part numbers and you'd order them alongside. Pull the exploded parts diagram for your faucet model and order every piece you're replacing in one go so you're not making a second trip.

Order per faucet position you expect to service. This is a single fastener, one manufacturer number (M962661-0070A) in one configuration, so there is no size or finish decision to make. For a multi-unit building with Westmere faucets, most maintenance shops keep a few on the shelf since a nut is what usually fails or gets lost during a cartridge or spout repair.

Straightforward hand work. It threads onto the existing faucet component, so it's a shut-off-the-supplies, access-the-connection, thread-it-on job. No special tooling is called out beyond a basin wrench or pliers depending on where the nut sits on your faucet.