Heavy-duty structural screw engineered to replace traditional lag screws without pre-drilling. The flat washer head provides a low-profile finish without sacrificing holding strength.

• 3/8" x 3-1/2" structural screw
• Flat washer head for low-profile, flush finish
• PrimeGuard Plus coating for corrosion and rust resistance
• Approved for use in pressure-treated lumber
• No pre-drilling required for faster installation
• Star drive for superior bit engagement (bit included)
• Engineered to replace lag screws
• 20 screws per box

Ideal for deck framing, ledger boards, structural connections, and heavy-duty wood-to-wood fastening where lag screw performance is needed.