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Strong-Drive® SDW TRUSS-PLY Screw 

Strong-Drive® SDW TRUSS-PLY Screw

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The Strong-Drive SDW Truss-Ply screw is a high-strength structural wood screw specifically designed for fastening multi-ply wood members, such as joining plated trusses and solid-sawn lumber. The SDW installs easily with no predrilling and is available in optimized lengths for fastening 2-, 3- and 4-ply trusses. With the SDW Truss-Ply screw, multi-ply trusses and components can be fastened from one side without requiring the lifting and flipping of heavy assemblies. It is code listed under IAPMO-UES ER-192 and meets 2015 and 2018 IRC® and IBC® code requirements for several common wood framing applications with wood and engineered wood.

Key Features

  • Large washer head provides maximum bearing area; stamped with the Simpson Strong-Tie “≠” sign and fastener length for easy identification after installation (0.75" head dia.)
  • 6-lobe, T40 drive provides positive engagement that makes the screw easy to drive and improves bit life (replacement driver bit — BIT40T-14)
  • Low-profile head results in less interference after installation; makes stacking and sliding members easier and allows installation of hardware and finishes to be virtually flush
  • Higher shear values than competitive products enable wider spacing, saving time and money
  • Bold thread design provides superior holding power and cinches fastened members together for consistent installation
  • SawTooth™ point ensures fast starts, reduces installation torque and eliminates the need for predrilling in most applications
  • Retail and mini-bulk packs include one 6-lobe, T40 driver bit; bulk packs include two driver bits
  • U.S. Patent 9,523,383

Applications

  • Truss-ply fastening

Related Links

Catalog Pages

Related Literature

Fastening Systems Catalog
C-F-2019
A catalog including new product information as well as any applicable specification and installation instructions for Simpson Strong-Tie® fasteners and Quik Drive® systems.
Catalog
Fastening Systems Technical Guide
C-F-2019TECHSUP
A technical document featuring engineering information for structural fasteners featured in the C-F-2019 Fastening Systems Catalog.
Catalog
Guía técnica de los sistemas de sujeción
C-F-2019TECHSP
Un documento técnico información de ingeniería para los sujetadores estructurales que se incluyen en el C-F-2019SP Catálogo de sistemas de sujeción.
Catalog
Sistemas de sujeción
C-F-2019SP
Catálogo que incluye información sobre productos nuevos y las instrucciones de instalación y especificaciones correspondientes para los sujetadores Simpson Strong-Tie® y los sistemas Quik Drive®.
Catalog
Fastening Systems Technical Supplement for Canada
C-F-2017CANADD
A technical information addendum for Simpson Strong-Tie Fasteners in Canada.
Catalog
Fasten Multi-Ply Members Faster
F-F-SDWCAN19
A flier providing features, benefits and Canadian limit states load tables for the Strong-Drive® TRUSS-PLY and EWP-PLY screws.
Flier
Reference Lateral Design Values for NDS Geometries with Strong-Drive® Screws
L-F-NDSCALC21
Simpson Strong-Tie Strong-Drive structural screws may be designed at reduced shear capacities when installed at closer connection geometries than those listed in the evaluation reports.
Engineering Letter
SDW Severe Skew
L-F-SDWSKTRS21
SDW Fasteners for Severe Skewed Truss Connections.
Engineering Letter
SDW Severe Skew - Heavy Version
L-F-SDWSKTRSH21
SDW Fasteners for Severe Skewed Truss Connections - Heavy version.
Engineering Letter
SDW and SDWS Double-Shear Applications with Wood Side Members
L-F-SDWDS19
Double-shear applications with Strong-Drive® SDW Truss-Ply and SDWS Timber screws in wood side members.
Engineering Letter

Product Information Table

Fastener Production Information and Stuff & Things
Model No. Coating/Material Length (in.) Shank Diameter (in.) Drive Type Head Type Thread Length Point Type Packaging Qty.
Footnotes

  1. Typical screw application key: 2x/Truss = Solid sawn dimensional lumber and plated wood trusses. 2x Truss Desert = Solid sawn dimensional lumber and plated wood trusses in desert environments (scant lumber).

  2. If assembly is less than or equal to 4 9/16" thick, use the SDW22438.

  3. If assembly is less than or equal to 6 3/16 " thick, use the SDW22600.
SDW22300 E-coat® Electrocoating 2 15/16 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 950
SDW22300MB E-coat® Electrocoating 2 15/16 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 250
SDW22300-R50 E-coat® Electrocoating 2 15/16 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 50
SDW22438 E-coat® Electrocoating 4 3/8 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 600
SDW22438MB E-coat® Electrocoating 4 3/8 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 200
SDW22438-R50 E-coat® Electrocoating 4 3/8 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 50
SDW22458 E-coat® Electrocoating 4 5/8 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 600
SDW22458MB E-coat® Electrocoating 4 5/8 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 200
SDW22458-R50 E-coat® Electrocoating 4 5/8 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 50
SDW22600 E-coat® Electrocoating 6 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 500
SDW22600MB E-coat® Electrocoating 6 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 200
SDW22600-R50 E-coat® Electrocoating 6 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 50
SDW22638 E-coat® Electrocoating 6 3/8 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 500
SDW22638MB E-coat® Electrocoating 6 3/8 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 200
SDW22638-R50 E-coat® Electrocoating 6 3/8 0.220 T40 6-Lobe Low Profile Head 1 7/16 SawTooth™ Point 50

Product Information Table

Model No. Length (in.) Drive Type Head Type Thread Length Shank Diameter (in.) Coating/Material Packaging Quantity UPC
SDW22300 2 15/16 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 950 707392156406
SDW22300MB 2 15/16 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 250 707392125501
SDW22300-R50 2 15/16 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 50 707392849605
SDW22438 4 3/8 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 600 707392318804
SDW22438MB 4 3/8 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 200 707392770305
SDW22438-R50 4 3/8 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 50 707392912804
SDW22458 4 5/8 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 600 707392149408
SDW22458MB 4 5/8 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 200 707392706502
SDW22458-R50 4 5/8 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 50 707392142706
SDW22600 6 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 500 707392576303
SDW22600MB 6 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 200 707392999003
SDW22600-R50 6 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 50 707392229100
SDW22638 6 3/8 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 500 707392232506
SDW22638MB 6 3/8 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 200 707392990604
SDW22638-R50 6 3/8 T-40 6-Lobe Low Profile Head 1 7/16 0.220 E-Coat™ Electrocoating 50 707392414308

Load Tables

SDW TRUSS-PLY — Allowable Shear Loads — DFL, SP, SPF, HF Lumberand 2x Truss Loaded on Head Side

  1. For minimum penetration into main (outermost) member of 1 1/8", use 235 lb. for DFL/SP and 210 lb. for SPF/HF.
Loaded on Head Side
(Three-ply assembly shown — other configurations similar)

SDW TRUSS-PLY — Allowable Shear Loads — DFL, SP, SPF, HF Lumber and 2x Truss Loaded on Point Side

  1. For minimum penetration into main member of 1 1/8", use 235 lb. for DFL/SP and 210 lb. for SPF/HF.
Loaded on Point Side
(Three-ply assembly shown — other configurations similar)

SDW TRUSS-PLY — Allowable Uniform Load (plf) Applied to Either Outside Member — Side-Loaded Multi-Ply Assemblies

  1. Each ply is assumed to carry same proportion of load.
  2. Loads may be applied to the head side and point side concurrently provided neither published allowable load is exceeded. (Example: a three-ply DFL assembly with a head side load of 1,300 plf and point side load of 900 plf may be fastened together with 3 rows of SDW at 16" o.c. between fasteners in a row.)
  3. When hangers are installed on point side, hanger face fasteners shall be a minimum of 3" long.
  4. Tables are based on Main Member Penetration as noted in tables above.
  5. Hanger load spacing on the multi-ply assembly should not exceed 24" o.c. Exception: On a skewed girder, hanger loads up to 34" o.c. (resulting from joists uniformly spaced up to 24" o.c.) may be converted to a uniform load.
Assembly A-W
Assembly B-W
Assembly C-W
Assembly F-W
SDW_Spacing-Requirements_callout
Spacing Requirements

See additional Load Tables, Technical Data and Installation Instructions for the Strong-Drive® SDW Truss-Ply screw.

Code Reports & Compliance

Drawings

PDF DWG DXF RFA IFC SAT

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