American Standard Handle Screw M4X34 - AMS-M918305

It's the fastener that holds a faucet handle onto the valve stem. American Standard lists it as a faucet application part, and it's a replacement screw rather than a complete handle or cartridge, so if the handle itself is cracked or the broach is stripped, the screw alone won't fix it.

Often yes, and it's the cheapest thing to try first. A handle that spins or wobbles usually means the M4 screw threads have galled or the head has rounded out. Swapping in a fresh M4 x 34 screw restores clamp on the stem. If the handle still slips with a new screw tight, the splines on the stem or inside the handle hub are worn and you're into a stem or handle replacement.

Order by manufacturer part number M918305-0070A. It's supplied with no decorative finish, which is normal for a handle screw since it sits under an index button or cap and isn't visible once the handle is assembled.

Just the screw. American Standard part M918305 is the single fastener, catalogued as a screw, not a handle kit, not a cartridge, and not a trim set. Anyone rebuilding a faucet will need the matching stem, cartridge or handle ordered separately.

It's a sensible bin item if your units run American Standard lavatory and tub faucets. Handle screws are the part that goes missing during a cartridge swap or gets dropped down a drain, and a stalled repair over one 34 mm screw costs more in a return trip than the screw does. Order under M918305-0070A so the length is right every time.