Simpson Strong-Tie SWD221034DBB-R30 Description

The Strong-Drive SWD Double-Threaded Screw is a high-performance structural fastener engineered for exterior wood-to-wood applications, including deck ledgers and general framing.

Simpson Strong-Tie SWD221034DBB-R30 Includes

• (30) Double-Threaded Wood Screw

Simpson Strong-Tie SWD221034DBB-R30 Features

• Professional grade engineered for strength, versatility, and reliability
• Double-thread design and smooth mid-shank pull members together securely
• Black, exterior-grade, double-barrier coating for corrosion resistance
• Chisel point provides easy driving for angled installation and reduced splitting
• Compact cylinder head design for low visibility, concealed installations
• 6-lobe driver bit for secure driving
• Code listed and load rated for structural applications

Simpson Strong-Tie SWD221034DBB-R30 Applications

• Deck ledger attachments to rim joists
• General exterior wood framing
• Pergolas, porches, and outdoor structural assemblies
• Wood-to-wood connections where high withdrawal strength is required

Simpson Strong-Tie SWD221034DBB-R30 Installation Overview

1. No pre-drilling required in most applications, thanks to its screw chisel point
2. Use with a standard driver or impact driver
3. For best results, drive the screw until the head is flush with the wood surfaceavoid overdriving
4. Can be used with treated lumber, following coating compatibility guidelines

Simpson Strong-Tie SWD221034DBB-R30 Specifications

Diameter 0.235″ Finish Double-Barrier Coating Length 10-3/4″ Material Carbon Steel Color Black Drive type T40 6-Lobe Head diameter 0.394″ Head type Cylinder Head Point type Screw Chisel Point Quantity 30 Shank style Unthreaded Mid-Shank Thread length 4-1/4″ Thread type Double Thread