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Canadian Owned & Operated Since 1964
Canadian Owned & Operated Since 1964
Simpson SDWS Exterior Timber Screws

Simpson SDWS Structural Exterior Timber Screws

by Simpson Strong-Tie
$0.79 - $3.15
$0.79
$0.79 - $3.15
$0.79

*Online Pricing Only

Availability:
In stock
Availability:
In stock
Availability:
In stock
Availability:
In stock
Availability:
In stock
Availability:
In stock
SKU SDWS22300DB
Size: 3"

Simpson SDWS Structural Exterior Timber Screws

SDWS screws are Simpson Strong-Tie structural timber screws for wood-to-wood and engineered wood connections. The SawTooth point starts fast, reduces installation torque and removes the need for predrilling in most applications.

They are sold in 3, 4, 5, 6, 8 and 10 in. lengths.

Features and Common Uses
  • Bold thread design for strong holding power
  • SawTooth point starts fast and eliminates predrilling in most applications
  • Underhead nibs let the head drive flush with less splintering
  • Large washer head gives a large bearing area
  • Size identification on every screw head
  • 6-lobe T40 drive for positive engagement and longer bit life; replacement bit BIT40T-134-R2
  • Double-barrier coating gives corrosion resistance equivalent to hot-dip galvanization, suitable for certain exterior and preservative-treated wood applications as described in the evaluation report

Commonly used for:

  • Structural wood-to-wood and engineered wood connections, including ledgers
  • Mass timber connections: CLT wall-to-wall, floor-to-floor, surface splines and lap joints
Specifications
Product Specifications
Brand Simpson Strong-Tie
Model SDWS
Lengths 3, 4, 5, 6, 8 and 10 in.
Drive 6-lobe T40
Replacement Bit BIT40T-134-R2
Head Large washer head
Point SawTooth
Coating Double-barrier coating
Colour Brown
Frequently Asked Questions
Do SDWS screws need predrilling?

Not in most applications. The SawTooth point reduces installation torque and eliminates the need for predrilling.

What drive bit does the SDWS use?

The SDWS has a 6-lobe T40 drive. The replacement bit is BIT40T-134-R2.

Can SDWS screws be used outdoors?

The double-barrier coating gives corrosion resistance equivalent to hot-dip galvanization and is suitable for certain exterior and preservative-treated wood applications, as described in the evaluation report.