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Simpson Anchors  |  SKU: SWD18312DBB-R50  |  Barcode: 707392025108

Simpson Strong-Tie SWD18312DBB-R50 Strong-Drive (0.180-in x 3-1/2-in T30) SWD Double-Threaded Screw Black (50 Pack)

$25.79
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Key Specifications

Finish: Double-Barrier Coating
For treated lumber: Yes
Length: 3-1/2"
Material: Carbon Steel
Type: Hand-Drive Screw
 

Description

Simpson Strong-Tie SWD18312DBB-R50 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 low-profile head for a clean finish.

Simpson Strong-Tie SWD18312DBB-R50 Includes

  • (50) Double-Threaded Wood Screw

Simpson Strong-Tie SWD18312DBB-R50 Features

  • Double-thread design for superior withdrawal resistance
  • Unthreaded mid-shank for tight wood connections
  • Corrosion-resistant double-barrier coating
  • Low-profile head for a clean, flush finish
  • Precision engineered for consistent performance

Simpson Strong-Tie SWD18312DBB-R50 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 SWD18312DBB-R50 Installation Overview

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

Simpson Strong-Tie SWD18312DBB-R50 Specifications

Diameter 0.180"
Finish Double-Barrier Coating
Length 3-1/2"
Material Carbon Steel
Color Black
Drive type T30 6-Lobe
Head diameter 0.315"
Head type Cylinder Head
Point type Screw Chisel Point
Quantity 50
Shank style Unthreaded Mid-Shank
Thread length 1-5/8"
Thread type Double Thread

NOTE: Ensure screws are installed straight into the side grain of the wood main member with the screw axis at a 90 Degree angle to the wood fibers.

WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer and birth defects or other reproductive harm. www.p65warnings.ca.gov

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