Why You Should Use Stainless Steel Screws for Outdoor Furniture

Outdoor furniture adds a lovely touch to any space, but it’s always up against the weather. The sun, rain, humidity, and temperature shifts can really take a toll on even the toughest designs. Applying a quality sealant is definitely a good first step, but the real trick to making your outdoor furniture last is all about the hardware you choose.

Over time, water can seep between the pieces and cause rusting along the screw's shank.

This might lead to some pretty unsightly stains on your furniture's surface. So, that's why our experts recommend that it’s best to use stainless steel screws for your outdoor furniture.

What stainless steel screws are the best for outdoor furniture?

Stainless steel fasteners are best for outdoor furniture making due to their strength and corrosion resistance.

But not all stainless steel fasteners are the same. Stainless steel furniture screws are manufactured in different grades. Every grade gives you different levels of protection and is designed to suit specific settings.

If you want your garden and patio furniture sets to last, here’s a quick guide on how to choose the right stainless steel screws:

The decision on what stainless steel furniture screws to use usually relies on your environment and how much you’re willing to spend on your project.

How To Avoid Costly Repairs Using Stainless Steel Screws for All Your Outdoor Furniture

When crafting outdoor furniture, it's best to use stainless steel screws because other options are likely to rust. 

Patio Furniture

Use patio table screws that are 2-1/2" to 3" long. #8, #9, or #10 size screws will work well for patio tables. For patio chairs, use stainless steel screws to fasten rubber feet to protect the bottom of furniture leg, as well as the surface of your deck or patio. 

Use patio umbrella base screws that are 1/2 inch in diameter and about 3 inches long. However, always check the patio umbrella base manufacturer's instructions.

For flat surfaces on your patio table and chairs, use two screws per board to prevent warping.

Garden Furniture

Choose the right screw length—typically 2-1/2" to 3-½” screws work well for most garden bench projects. Apply wood glue to joints before screwing for added strength and durability.

When attaching bench legs, use lag screws for maximum fastening power. .

For larger benches, use SS lag screws or bolts for critical structural connections.

For garden swings, choose screws that are long enough to provide secure attachment, typically 2.5" to 4" depending on the wood thickness. Through-bolting is best for safety. 

Ensure the screws can support the weight of the swing and its occupants. Stainless steel lag furniture screws or bolts may be necessary for heavy-duty swings.

For attaching chains or ropes, use eye bolts with nuts and washers for added security.

Picnic Tables

Choose picnic table screws that are long enough to provide secure attachment, typically 2.5" to 4" depending on the wood thickness. Consider using structural screws for stronger connections in key areas of the table.

When attaching table legs, make sure screws are placed flush with edges and corners for stability.

Outdoor Umbrella Stands

Typically, 1/4" to 3/8" diameter screws work well for most umbrella bases. The length should be appropriate for the base thickness, usually 1" to 2".

Use locking washers to prevent screws from loosening due to wind and movement.

Use similar metals to prevent galvanic corrosion. For example, use stainless steel outdoor umbrella stand screw for stainless steel base.

Pergola

For most pergolas, 3" to 4" deck screws work well for main connections. Use 1-5/8" screws for attaching thinner boards or decorative elements.

Choose stainless steel structural screws. They can handle more weight and have a larger diameter for better hold.

When joining large beams or posts, stainless steel lag screws provide extra strength. Use SS lag screws that are 3/8" to 1/2" in diameter and 3" to 6" long.

Use washers with SS lag screws. Washers distribute the load and prevent the screw head from sinking into the wood.

Planters and Plant Stands

For most planters, 1-1/4" to 2" screws are sufficient. Use longer screws (2-1/2" to 3") for joining thicker pieces or for added strength.

Use finer threaded screws for hardwoods. Coarse threaded screws work better for softwoods.

Choose flathead screws to reduce water collection points. When attaching bottom pieces, leave small gaps or drill drainage holes.

Hammock Stands

Use stainless steel structural furniture screws or lag screws, which are designed for load-bearing applications.

Use screws long enough to penetrate at least 1.5 inches into the main support.

3/8" diameter screws are often sufficient for most hammock stands. For heavier-duty stands or larger timber, consider 1/2" diameter screws.

Use hex-head screws for better torque. They also allow for easier disassembly if needed.

Remember that hammocks create swinging motions. Use more screws than you think necessary to account for these dynamic forces.

Outdoor Bar Furniture

For attaching the bar countertop, use pocket hole screws. This provides a strong, hidden connection between the counter and the frame.

For wooden stools, #8 or #10 wood screws are typically sufficient. Use 1-1/4" to 1-1/2" screws for attaching the seat to the frame. Place the screws about 1" from the edge of the seat for strength.

Build Outdoor Furniture That Lasts Longer: Only Use Quality Stainless Steel Furniture Screws

Using stainless steel screws for your outdoor furniture can definitely feel like a bit of a splurge at first. It’s a good idea to buy quality stainless steel furniture screws with TORX heads in bulk.

Buying screws by the pound instead of in a container is a smarter way to save money and make sure you have plenty for your whole outdoor project.

Going with TORX (star drive) screws gives you an excellent grip, and they're way less likely to cam out. Screws that don't cam out prevent damage to your materials and cut down on the need for replacements, which can lower the costs of your project in the long run. 

FAQs

Frequently Asked Questions on How To Use Stainless Steel Screws for Outdoor Furniture

How do you keep furniture screws from loosening?

Use the correct fastener for the job.

Second, through-bolt critical joints for added safety and durability.

Finally, pre-drill holes and use the right screws for outdoor furniture installation to avoid splitting and damage. Keep an eye on your outdoor structures, a stitch in time can save nine. 

How do you hide screw holes in furniture?

Use stained wood plugs that match your furnishings. Weatherproof caps or covers can hide screw holes in metal outdoor furniture.

Another alternative is to countersink stainless steel furniture screws, fill the holes with outdoor-grade wood filler or epoxy, sand, and paint to match the furniture.

Decorative screw covers can match your outdoor furniture and protect stainless steel screws from the elements.