Attwood 1 Inch Brass Snap-Handle Drain Plug 11591-3
Attwood 1 Inch Brass Snap-Handle Drain Plug 11591-3 — Product description
The Attwood 11591-3 is a 1-inch brass-plated snap-handle drain plug, the fast, no-tools fix for a cracked or missing transom plug. Turn the handle clockwise and snap it flat, and the cam action seals your drain watertight. It's the proven design boaters have trusted for years, and this version ships without a chain.
The Attwood 11591-3 is a 1-inch brass-plated snap-handle drain plug, the simple part that keeps water where it belongs. If you've ever pulled your boat out at the ramp, reached for the transom drain, and found the plug cracked or missing, this is the fix. It's the classic snap-handle design boaters have trusted for decades, and it installs in about two seconds with nothing but your fingers.
Here's how it works. You push the plug into a 1-inch drain opening with the handle up, then turn the handle clockwise and flip it down flat. That cam action squeezes the gasket outward against the walls of the drain tube, and the handle snaps down to lock everything in place. No threads to cross, no wrench, no fuss. When it's time to drain the bilge back at the dock, you flip the handle up, give it a turn, and pull. That quick on-and-off is exactly why so many boaters prefer a snap plug over a screw-in type at a busy ramp.
The body is brass plated, which is what you want in a part that lives half its life wet. Brass shrugs off the corrosion that eats cheaper hardware, so the plug keeps sealing season after season in both fresh and salt water. We still tell folks to give it a rinse after a salt day and to check the gasket now and then, but that's true of any through-hull fitting on the boat.
This particular version ships without a safety chain. That keeps it clean and low-profile, and it's the right pick if your transom already has a chain anchor or if you'd rather not have one dangling. It also makes a smart spare to toss in the glovebox or tackle bag. A missing drain plug is the kind of thing that turns a great morning into a bad one, and having a backup 1-inch plug on hand has saved more than a few launches.
Sizing is straightforward but worth a quick check. The 1-inch measurement refers to the inside diameter of the drain tube the plug seats into, not the outside of the fitting. Most small aluminum and fiberglass boats use a 1-inch transom drain, so this is the common size. If you're not sure, pull your old plug and measure the tube, or bring the old plug with you to match it.
Installation takes no tools at all. Seat the plug, turn clockwise, snap the handle down. That's it. To remove it, just reverse the steps. Because the seal comes from the gasket expanding rather than threads biting in, there's nothing to strip or cross-thread, which is a real nicety when you're doing it cold and wet with gloves on.
Like any rubber-sealed fitting, the gasket is the part that eventually wears. If you notice a slow seep at the transom or the handle no longer snaps down with a firm bite, it's time for a fresh plug rather than cranking harder on a tired one. At this price, keeping a spare or two around is cheap insurance for your bilge and your peace of mind.
So who's this for? Owners of small runabouts, aluminum fishing boats, jon boats, and dinghies who want a dependable transom plug that's fast to work at the ramp. It's just as handy as an off-season replacement when you're going through the boat and swapping out tired hardware before spring. Attwood has been building marine gear like this for over a hundred years, and this little plug is a good example of a part that simply does its job and gets out of your way.
Key Features
- Fits 1 inch diameter drain tubes, the common size on small aluminum and fiberglass boats
- Brass-plated body resists corrosion in fresh and salt water for seasons of reliable sealing
- Snap-handle cam action expands the gasket for a watertight seal, with no threads to cross or strip
- Installs and removes by hand in seconds, no tools needed at the ramp
- Flip-down handle locks flat and low-profile so it stays put underway
- Ships without a safety chain for a clean install or a compact glovebox spare
- Backed by Attwood, a marine hardware maker with over 100 years of experience
Why Buy from NVN Marine
- Authorized Attwood Marine reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Snap-Handle Plug; 1 Inch Diameter; Brass Plated; Without Chain; Aftermarket Packaging |
|---|---|
| Brand | Attwood Marine |
| Manufacturer | Attwood |
| Manufacturer Part Number | 11591-3 |
| UPC | 022697004277 |
| Material | Brass Plated |
| Fits Drain Diameter | 1 inch |
| Handle Type | Snap-Handle |
| Locking Action | Cam action, flip-down handle |
| Seal | Watertight |
| Safety Chain | Without chain |
| Packaging | Aftermarket carded packaging |
Frequently asked questions
What size drain does this plug fit?
It fits a 1-inch diameter drain. That measurement is the inside diameter of the drain tube the plug seats into, which is the common size on most small aluminum and fiberglass boats. If you're unsure, pull your old plug and measure the tube.
How does the snap-handle lock work?
You seat the plug with the handle up, turn it clockwise, and flip the handle down flat. The cam action expands the gasket against the drain walls for a watertight seal, and the handle snaps down to lock it in place. No threads, no tools.
Does it come with a safety chain?
No. This version ships without a chain. That keeps it clean and low-profile, and it makes a great compact spare to keep aboard.
Is it actually brass?
The body is brass plated. Brass resists the corrosion that eats cheaper hardware, so it keeps sealing season after season.
Will it hold up in saltwater?
Yes. The brass plating stands up well to salt and fresh water alike. We still recommend a quick freshwater rinse after a day in the salt and an occasional look at the gasket, same as any through-hull fitting.
Where does this plug go on the boat?
It seats in the transom drain tube that lets your bilge drain when the boat is out of the water. Any 1-inch drain opening that matches the plug will work.
Do I need any tools to install it?
No tools at all. Push it in, turn the handle clockwise, and snap it down. To remove it, flip the handle up, turn, and pull.
Can I use it in a livewell or baitwell drain?
If the well has a standard 1-inch drain opening that matches the plug, yes. Measure the drain tube first to confirm the fit.
Why choose a snap-handle plug instead of a screw-in type?
The snap-handle seals and releases with a quick turn and flip, so there's nothing to thread or cross-thread. At a busy ramp, that quick on-and-off is a lot faster and easier, especially with cold, wet hands.
When should I replace it?
The gasket is the part that wears. If you see a slow seep at the transom or the handle stops snapping down with a firm bite, swap in a fresh plug rather than cranking harder on a worn one.
