Simpson Strong-Tie SWD18614DBB Description

The Strong-Drive SWD Double-Threaded Screw is a high-performance structural fastener engineered for exterior wood-to-wood applications, featuring a corrosion-resistant double-barrier coating and a flush head design for a clean finish.

Simpson Strong-Tie SWD18614DBB Includes

• (500) 0.180 x 6-1/4 in. Double-Threaded Wood Screw

Simpson Strong-Tie SWD18614DBB Features

• Double-threaded design for superior withdrawal resistance
• Unthreaded mid-shank for tight wood connections
• Black double-barrier coating for outdoor durability
• Flush head design for a clean, snag-free finish
• Precision engineered for consistent performance

Simpson Strong-Tie SWD18614DBB Applications

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

Simpson Strong-Tie SWD18614DBB Installation Overview

1. No pre-drilling required in most applications
2. Use with a standard driver or impact driver
3. Drive screw until head is flush with wood surface
4. Compatible with treated lumber following coating guidelines

Simpson Strong-Tie SWD18614DBB Specifications

Diameter 0.180″ Finish Double-Barrier Coating Length 6-1/4″ Material Carbon Steel Color Black Drive type T30 6-Lobe Head diameter 0.315″ Head type Cylinder Head Point type Screw Chisel Point Quantity 500 Shank style Unthreaded Mid-Shank Thread length 2-1/2″ Thread type Double Thread