Simpson Strong-Tie Strong-Drive SDWF Floor-to-Floor Screw Kit (25-Count) - Model SDWF2730-TUW provides a complete, ready-to-install solution for wind-uplift restraint connections in wood-frame construction. Designed to span the floor system and connect upper and lower walls from the top, this kit simplifies the continuous uplift load path while delivering superior long-term performance. The 30-inch, 0.270-inch shank diameter screw features a unique variable thread design and Type-17 point for fast, reliable engagement, and the included take-up washer (TUW) ensures proper seating and consistent connection quality.

Key Features

• Simplifies wind-uplift restraint connections by attaching upper and lower walls together from the top of the floor system
• 30-inch length spans the full floor assembly for a continuous uplift load path within the structure
• Variable thread design provides optimized holding strength throughout the screw's engagement zone
• Type-17 point for clean, self-starting penetration into wood framing members
• Hex washer head with 5/16 in. hex drive for high-torque installation with standard tools
• E-coat electrocoating finish for corrosion resistance over the life of the structure
• 5-inch thread length pairs with the included TUW take-up washer for proper SDWF engagement
• 0.730-inch head diameter distributes load across the washer bearing surface
• Complete kit includes all necessary hardware - no separate component sourcing required

Specifications

• Model Number: SDWF2730-TUW
• Shank Diameter (in.): 0.270
• Length (in.): 30
• Head Diameter (in.): 0.730
• Head Type: Hex Washer Head
• Drive Type: 5/16 in. Hex
• Thread Type: Variable Thread Design
• Thread Length (in.): 5
• Point Type: Type-17 Point
• Coating/Material: E-coat Electrocoating
• Pack Size: 25-count kit
• Country of Origin: Taiwan

What's Included

• (25) Strong-Drive SDWF Floor-to-Floor screws
• (25) TUW take-up washers (galvanized 10 ga. steel)
• (100) Strong-Drive SD Connector screws (#9)
• 5/16 in. hex driver bit (replacement driver bit - BITHEXR516-R1)
• Screw depth guide to ensure proper SDWF engagement with TUW

Frequently Asked Questions

What is the purpose of the SDWF Floor-to-Floor screw?

The Strong-Drive SDWF is designed to connect upper and lower walls together by spanning the floor system. It is installed from the top, creating a continuous uplift load path through the structure to resist wind-uplift forces.

What tools are needed to install the SDWF screw?

The screw uses a 5/16 in. hex drive, and a replacement hex driver bit (BITHEXR516-R1) is included in the kit. A screw depth guide is also included to ensure proper engagement between the SDWF screw and the TUW take-up washer.

What is the take-up washer (TUW) made of, and why is it included?

The TUW take-up washer is made of galvanized 10-gauge steel. It is included to work in conjunction with the SDWF screw, ensuring proper seating depth and consistent load transfer at the connection point. The screw depth guide in the kit helps confirm correct SDWF engagement with the TUW.

Does this kit contain everything needed for a complete installation?

Yes. The 25-count kit includes all required installation hardware: 25 SDWF screws, 25 TUW take-up washers, 100 Strong-Drive SD Connector screws (#9), a 5/16 in. hex driver bit, and a screw depth guide - eliminating the need to source components separately.

Note: Product dimensions may differ from picture. Please see item description for specifications.