What to look for
Grade by climate
304 for inland and dry climates; 316 within a few miles of the coast. Hot-dip galvanized is a budget outdoor option but lacks the finish of stainless.
Security pins
For out-swing exterior doors, non-removable-pin (NRP) hinges stop the door being lifted off.
Weatherproof finish
A quality satin or coated finish resists UV fade and surface staining.
Self-closing for gates
Outdoor gates, especially around pools, often need self-closing hardware.
Match the grade to your climate
| Exposure | Grade to buy | Why |
|---|---|---|
| Dry, inland | 304 | Rain-rinsed and low-chloride — 304 lasts for years. |
| Within ~5 mi of coast | 316 | Airborne salt pits 304; the molybdenum in 316 resists it. |
| Pool / spa area | 316 | Chlorine is aggressive; 304 will tea-stain and pit. |
| De-icing salt zone | 316 | Road and walkway salt is the same chloride attack. |
| Budget, low stakes | Hot-dip galvanized | Cheaper, but the coating wears and the look is industrial. |
Our picks by use case
Penrod 304 Stainless Ball-Bearing Hinge, 4″ NRP (3-pack)
304 stainless ball-bearing hinge with a non-removable pin and square corners — a solid value pick for inland exterior doors. Step up to 316 if you're within a few miles of salt water.
Check price on Amazon →Affiliate link — we may earn a commission at no cost to you.Hinge Outlet 316 Marine-Grade Stainless Door Hinge, NRP (3-pack)
Genuine 316 marine-grade stainless with a non-removable pin for outswing security. This is the grade to use within ~5 miles of salt water or anywhere chlorides are present. Pair with 316 screws to avoid galvanic corrosion.
Check price on Amazon →Affiliate link — we may earn a commission at no cost to you.Common mistakes to avoid
- Buying 304 "because it's stainless" within sight of salt water — it will streak and pit within a season or two.
- Skipping non-removable-pin (NRP) hinges on an out-swing exterior door, which lets someone tap the pins and lift the door off.
- Pairing stainless hinges with plain carbon-steel screws — the screws rust and can set up galvanic corrosion. Use matching stainless fasteners.
- Assuming a bright finish means marine grade. Look for a 316 or A4 stamp, not just shine.
- Under-counting hinges on heavy solid-core or oversized doors, which overloads each knuckle and causes sag.
Frequently asked questions
Do stainless outdoor hinges need oil?
Not really. Stainless runs dry; a little dry PTFE or silicone lube stops squeak without attracting grit. Skip heavy oils outdoors — they hold dust and grime.
Will 316 ever stain outdoors?
In harsh salt air even 316 can pick up light surface tea-staining, but it won't structurally pit the way 304 does. A wipe-down with fresh water or a mild stainless cleaner restores it.
Is galvanized as good as stainless outdoors?
Hot-dip galvanized resists rust well and costs less, but the coating can eventually wear and it lacks the clean look of stainless. Near salt, stainless 316 wins.
What's an NRP hinge?
Non-removable pin — the pin can't be tapped out from outside, so an out-swing door can't be lifted off its hinges. A basic security upgrade.