Simpson SDWS Exterior Double Barrier Structural Wood Screws are designed with a shorter thread length to fasten multi-ply members such as trusses, engineered lumber products and solid-sawn lumber. Large washer head provides maximum bearing area and deep 6-lobe recess reduces cam-out. Requires type T-40 bit. Optimal screw lengths provide maximum penetration while preventing the point from protruding out the back member.
- SawTooth point ensures fast starts, reduces installation torque and eliminates the need for predrilling in most applications
- Bold thread design provides superior holding power
- Underhead nibs allow for head to drive flush to surface with reduced splintering
- Large low-profile washer head provides maximum bearing area (0.760-in. head dia.)
- Size identification on all SDWS screw heads
- SawTooth point ensures fast starts, reduces installation torque and eliminates the need for predrilling in most applications
- Bold thread design provides superior holding power
- Underhead nibs allow for head to drive flush to surface with reduced splintering
- Large low-profile washer head provides maximum bearing area (0.760-in. head dia.)
- Size identification on all SDWS screw heads