T-H Marine Fixed Eye Spring Snap, 528 lb Zinc Steel

The T-H Marine fixed eye spring snap is a simple piece of hardware that earns its keep on just about any boat. It's a 4-inch zinc-plated steel snap with a spring-loaded gate and a fixed, non-rotating eye, rated to a 528-pound breaking strength. If you've ever needed to clip a line to a ring, hang a fender, or secure a loose strap in a hurry, this is the part you reach for. Nothing fancy. Just a dependable snap that does its job every time you grab it.

The eye on this one is fixed, which means it doesn't rotate. That's exactly what you want when the line or strap attached to it stays put and you don't need it to spin out twists. Think flag halyards, safety lanyards, securing a cover, or clipping gear to a pad eye. There's one less moving part to wear out, and the fixed eye keeps the snap oriented the way you clipped it. If your setup tends to wind up and you need the snap to turn freely under load, T-H Marine makes a swivel-eye version in this same family. But for most everyday clipping jobs, the fixed eye is all you need.

The body is steel with a zinc-plated finish. Zinc plating gives you solid corrosion resistance for deck duty, trailer rigging, and the kind of occasional spray and rain any boat sees. It's a good general-purpose choice at a price that won't make you wince when you need a handful of them. We'll be straight with you, though. Zinc isn't stainless and it isn't solid brass. If this snap lives fully submerged in salt water or sits in constant spray, it'll eventually show surface rust. Rinse it with fresh water after a salty day and it'll last a long time. For a freshwater boat or a spot that's out of the weather, you'll barely think about it.

Here's the number that matters, and the one people get wrong. The 528-pound rating is the breaking strength, the load at which the snap fails. It is not a safe working load and it is not a lifting rating. A good habit on the water is to keep your actual working load well under that breaking number, so you've always got margin for shock loads: a wave slamming a fender, a gust yanking a cover, a line coming up tight all at once. Treat 528 pounds as the ceiling you never want to approach, not the target you design to.

And don't use this, or any spring snap, for overhead lifting, hoisting people, or anything where a failure could hurt someone. That's not what it's built for. It's rigging hardware for securing and connecting gear, and it's genuinely good at that. Keep life-safety and lifting loads on gear that's specifically rated and certified for the job.

So where does it shine? Clipping dock lines to rings, hanging fenders off the rail, securing bimini and cover straps, rigging a flag or a burgee, holding a wash-down hose or a bucket, attaching a kill-switch lanyard, or just organizing gear in a locker. The spring-loaded gate snaps shut on its own the moment you let go, so whatever you clipped stays captured until you deliberately open it again. That one-handed operation is a small thing until you're reaching over the side with your other hand holding the boat off the dock. Match the 4-inch snap to a ring or line that fits the gate opening and you're set.

It's sold as a single snap, so you buy exactly how many you need, whether that's one spare for the ditch bag or a dozen for a full rigging refresh. Simple, honest hardware that does one job well. Keep a few aboard and you'll find a use for them before the season's out.