Fasteners
Screws
GRK
$40-$120 per boxStainless Steel Screws for Corrosion-Free Performance
Stainless steel screws offer the ultimate corrosion resistance for demanding outdoor environments, hardwood decking, and coastal projects. Unlike coated fasteners, stainless provides through-and-through protection that will not stain tannin-rich woods like cedar or redwood.
Key Features
- Through-and-through corrosion resistance
- Will not stain cedar or exotic hardwoods
- Type 305 and 316 grades available
- Star drive for slip-free installation
- Self-drilling tips for hardwoods
Specifications
Material: Type 305 or 316 stainless steel | Drive: Star/Torx T25 | Head: Trim or flat countersink | Lengths: 1-1/4in to 4in | Gauges: #7
#8
#9
#10
Best For
Cedar and redwood projects
Coastal and marine environments
Exotic hardwood decking
Outdoor furniture
Compatible Materials
Cedar
Redwood
Ipe
Tigerwood
Mahogany
Composite decking
Pros & Cons
Pros
- ✓ Zero staining on tannin-rich wood
- ✓ Lifetime corrosion resistance
- ✓ Ideal for marine environments
- ✓ No coating to chip or wear
Cons
- ✗ Significantly more expensive than coated screws
- ✗ Softer than hardened steel can strip in dense wood
- ✗ Limited availability in some sizes
Installation Tips
Always pre-drill in hardwoods like ipe to prevent screw breakage. Use a depth-setting driver to avoid overdriving. Do not mix with galvanized hardware to avoid galvanic corrosion.
Frequently Asked Questions
Use 316 for saltwater, marine, or within 1 mile of coast. 305 is suitable for most inland outdoor applications.
Raw material cost is 3-5x higher than carbon steel, but they eliminate callbacks from staining and corrosion.
Not recommended. Contact between stainless and galvanized can cause galvanic corrosion.