Deck Screws - Recommended Usage

Fastener type Hardwood decking Softwood
decking
Pressure treated wood decking Composite decking PVC deck trim Docks Marine/coastal
Deck screw, Bugle head
✓ *
Deck screw, Trim head
✓ *
DWP Wood SS screw, Flat head
✓ * ✓ *
DWP Wood SS screw, Trim head
  ✓ * ✓ *
DSV Wood screw, Flat head
 
DCU Composite screw, Cap head
✓ *
* Use Stainless 316 for marine/coastal applications whenever possible.