A Guide for Contractors and Builders
When building a deck, choosing the right wholesale deck screws is just as important as selecting quality wood or composite materials. Deck fasteners must withstand moisture, temperature changes, and corrosion, ensuring the structure remains strong and secure for years.
With so many options available, how do you know which screws offer the best corrosion resistance and durability? Below, we break down the top three types of corrosion-resistant deck screws so you can make an informed choice.
Best Corrosion-Resistant Deck Screws for Long-Lasting Performance
1. Grade 316 Stainless Steel – The Ultimate in Corrosion Resistance
Often called marine-grade stainless steel, Grade 316 stainless steel deck screws provide the highest level of corrosion resistance. These screws contain molybdenum, which helps protect against rust, pitting, and damage from exposure to saltwater and harsh weather.
Best Used For:
- Decks and docks near oceans, lakes, or other large bodies of water
- Coastal areas with high humidity and salt air
- Swimming pool decks and spas
- Naturally rot-resistant woods like cedar, redwood, and tropical hardwoods
- Composite and wood decking
2. Grade 304 & 305 Stainless Steel – Durable & Reliable
304 and 305 stainless steel are widely used for outdoor applications due to their strong corrosion resistance and affordability compared to 316 stainless steel. These screws are an excellent mid-tier option for contractors who need long-lasting durability but aren’t working in extreme saltwater environments.
Best Used For:
- Wood and composite decking
- High-humidity environments
- General outdoor construction
Some contractors also choose epoxy- or ceramic-coated stainless steel screws for extra water resistance and protection against fastener loosening over time.
3. Epoxy-Coated Heat-Treated Steel – Budget-Friendly Protection
Epoxy-coated deck screws are an affordable alternative to stainless steel. These fasteners feature a polymer resin coating that provides a protective barrier against moisture and corrosion while maintaining strength for secure fastening.
The coating also adheres tightly to the screw during installation, making them ideal for treated lumber and other moisture-prone materials.
Best Used For:
- Treated lumber
- Wood and composite decking (when recommended by the manufacturer)
- General outdoor applications where cost-effective corrosion resistance is needed
What to Look for in High-Quality Deck Screws
When selecting wholesale deck screws, consider these key factors for maximum performance:
- Corrosion Resistance: Choose stainless steel or coated screws that resist rust and weather damage.
- Drive Type: Screws with star or square drive recesses reduce stripping and provide a secure grip.
- Self-Drilling Tips: Type 17 endpoints eliminate the need for pre-drilling and allow for smoother installation.
- Thread Design: Coarse threads offer better grip in wood, while fine threads are ideal for composite decking.
Additional Corrosion-Resistant Fasteners for Deck Construction
In addition to wholesale deck screws, we stock a variety of fasteners engineered for moisture resistance and long-term durability:
- Galvanized screws for general outdoor use
- Stainless steel fasteners (including deck screws)
- Threaded rods for structural reinforcement
- Nuts & bolts – Including timber, lag, carriage, and hex-head bolts
Need Help Choosing the Right Wholesale Deck Screws?
Selecting the right deck screws is critical to ensuring a strong, long-lasting structure that resists corrosion and weathering. Whether you need marine-grade stainless steel, epoxy-coated steel, or general-purpose fasteners, we have the wholesale inventory to meet your needs.
Call us at 904-353-4783 or fill out a quote request form online to get competitive pricing and expert assistance.
