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Strong-Drive® SDWS TIMBER
and SDWH TIMBER-HEX Screws
Structural Wood-to-Wood Connections Including Ledgers


Simpson Strong-Tie has expanded the Strong-Drive® SDW wood screw product line with two new screws designed to provide an easy-to-install, high-strength alternative to through-bolting and traditional lag screws. The new SDWS and SDWH structural wood screws are ideal for the contractor and do-it-yourselfer alike.

VIDEO: Watch how quickly SDWS/SDWH can be installed.

SDWS

The Simpson Strong-Tie® Strong-Drive® SDWS wood screw is specifically designed for structural wood-to-wood applications and is also ideal for a wide variety of projects where a high-strength attachment is needed. This 0.220" diameter fastener requires less torque to install than comparable fasteners, making it easier to drive, and the corrosion-resistant coating makes it suitable for many interior or exterior applications.

SDWH

The Simpson Strong-Tie® Strong-Drive® SDWH screw is ideal for structural and general-purpose fastening applications where a hex-head drive is preferred. This 0.195" diameter fastener requires less torque to install than comparable fasteners, making it easier to drive; while the corrosion-resistant coating makes it suitable for many interior and exterior applications.

Find these fasteners in the Fastener Finder: SDWS | SDWH


Features:

  • Bold thread design provides superior holding power
  • Patented 4CUT™ tip ensures fast starts, reduces installation torque and eliminates the need for pre-drilling in most applications
  • Knurled shank section above the threads makes driving easier
  • Under-head nibs offer greater installer control when seating the head
  • Large head provides maximum bearing area
  • Double-barrier coating provides corrosion resistance equivalent to hot-dip galvanization, making it suitable for many exterior and preservative-treated wood applications
  • Available in lengths up to 10" for maximum versatility
  • Bit included in package


    SDWS head close-up Additional SDWS Features:
  • Deep, 6-lobe drive reduces cam-out, making driving easier
  • Low-profile head design provides a clean look and less interference after installation


    SDWH head close-up Additional SDWH Features:
  • Large hex-washer head provides excellent bearing area for a secure connection
  • Hex drive reduces cam-outs for easier driving

Material: Heat-treated carbon steel

Finish: Double-barrier coating

Installation:

  • See General Notes.
  • SDWS screws install best with a low-speed 1/2" drill and a T-40 6-lobe bit. The matched bit included with the screws is recommended for best results.
  • SDWH screws install best with a low-speed 1/2" drill and a 5/16" hex driver bit. The matched bit included with the screws is recommended for best results.
  • Pre-drilling is typically not required. Where pre-drilling is necessary, use a 5/32" drill bit for SDWS and a 1/8" drill bit for SDWH.
  • Screw heads that are countersunk flush to the wood surface are acceptable if the screw has not spun out.
Identification on all
SDWS screw heads


Lengths     Stamp
SDS Head Stamps
3"
4"
5"
6"
8"
10"
Identification on all
SDWH screw heads


Lengths     Stamp
SDS Head Stamps
3"
4"
6"
8"
10"

top Gallery:
  roll over images below to see larger image
 
 
SDWS and SDWH
U.S. Patents 5,897,280 and 7,101,133, and patent pending
SDWS Dimensions SDWH Dimensions  
Ledger-to-Band Joist Assembly using SDWS
(Wood-framed lower floor acceptable, concrete wall shown for illustration purposes)

Exterior cladding and flashing not shown for clarity
SDWS Screw Spacing Detail

Ledger fastener spacing may be offset up to 3" to avoid interference with joist attachment
Ledger-to-Band Joist Assembly using SDWH
(Wood-framed lower floor acceptable, concrete wall shown for illustration purposes)

Exterior cladding and flashing not shown for clarity
SDWH Screw Spacing Detail

Ledger fastener spacing may be offset up to 3" to avoid interference with joist attachment


top Product Information:

NEW All lengths of SDWS and SDWH screws now available in 250ct. package sizes.
See model numbers in the Fastener Finder: SDWS | SDWH

SDWS Screw Product Information Table
SDWH Screw Product Information Table

top SDWS Load Tables:See code report listings below
SDWS Spacing Requirements


SDWS Screw Shear, Douglas Fir-Larch and Southern Pine Lumber Table
  1. All applications are based on full penetration into the main member. Full penetration is the screw length minus the side member thickness.
  2. Allowable loads are shown at the wood load duration factor of CD = 1.0. Loads may be increase for load duration per the building code up to a CD = 1.6. Tabulated values must be multiplied by all applicable adjustment factors per the NDS.
  3. Minimum fastener spacing requirements: 6" end distance, 1 7/16" edge distance, 5/8" between staggered rows of fasteners, 4" between non-staggered rows of fasteners and 8" between fasteners in a row.
  4. For in-service moisture content greater than 19%, use CM = 0.7.

SDWS Screw Shear, Spruce Pine Fir and Hem Fir Lumber Table
  1. All applications are based on full penetration into the main member. Full penetration is the screw length minus the side member thickness.
  2. Allowable loads are shown at the wood load duration factor of CD = 1.0. Loads may be increase for load duration per the building code up to a CD = 1.6. Tabulated values must be multiplied by all applicable adjustment factors per the NDS.
  3. Minimum fastener spacing requirements: 6" end distance, 1 7/16" edge distance, 5/8" between staggered rows of fasteners, 4" between non-staggered rows of fasteners and 8" between fasteners in a row.
  4. For in-service moisture content greater than 19%, use CM = 0.7.

SDWS — Douglas Fir-Larch, Southern Pine, Spruce Pine Fir and Hem Fir Lumber Allowable Withdrawal Loads Table
  1. The tabulated reference withdrawal design value, W, is in pounds per inch of the thread penetration into the side grain of the main member.
  2. The tabulated reference withdrawal design value, WMax, is in pounds where the entire thread length must penetrate into the side grain of the main member.
  3. Tabulated reference withdrawal design values, W and WMax, are shown at a CD = 1.0. Loads may be increased for load duration per the building code up to a CD = 1.6. Tabulated values must be multiplied by all applicable adjustment factors from the NDS as referenced in the IBC or IRC.
  4. Embedded thread length is that portion held in the main member including the screw tip.
  5. Values are based on the lesser of withdrawal from the main member or pull-through of a 1 1/2" side member.
  6. For in-service moisture content greater than 19%, use CM = 0.7.

SDWS —2009 and 2012 IRC Compliant Spacing for a Sawn Lumber Deck Ledger to Band Joist
Table
  1. SDWS screw spacing values are equivalent to 2009 IRC Table R502.2.2.1. The table above also provides SDWS screw spacing for a wider range of materials commonly used for band joists, and an alternate loading condition as required by some jurisdictions.
  2. Solid-sawn band joists shall be Spruce-Pine-Fir, Hem-Fir, Douglas Fir-Larch, or Southern Pine species. Ledger shall be Hem-Fir, Douglas Fir-Larch, or Southern Pine species.
  3. Fastener spacings are based on the lesser of single fastener ICC-ES AC233 testing of the Strong-Drive® SDWS screw with a safety factor of 5.0 or ICC-ES AC13 ledger assembly testing with a factor of safety of 3.0. Spacing includes NDS wet service factor adjustment.
  4. Multiple ledger plies shall be fastened together per code independent of the SDWS screws.
  5. Screws shall be placed at least 1 1/2" from the top or bottom of the ledger or band joist, 6" from the end of the ledger with 3" between rows and spaced per the table. See SDWS Screw Spacing Detail
  6. Structural sheathing between the ledger and band shall be a maximum of 1/2" thick and fastened per code.



top SDWH Load Tables:See code report listings below
SDWH Spacing Requirements


SDWH Screw Shear, Douglas Fir-Larch and Southern Pine Lumber Table
  1. All applications are based on full penetration into the main member. Full penetration is the screw length minus the side member thickness
  2. Allowable loads are shown at the wood load duration factor of CD = 1.0. Loads may be increase for load duration per the building code up to a CD = 1.6. Tabulated values must be multiplied by all applicable adjustment factors per the NDS.
  3. Minimum fastener spacing requirements: 6" end distance, 1 7/16" edge distance, 5/8" between staggered rows of fasteners, 4" between non-staggered rows of fasteners and 8" between fasteners in a row.
  4. For in-service moisture content greater than 19%, use CM = 0.7.

Shear Loads, Spruce Pine Fir and Hem Fir Lumber Table
  1. All applications are based on full penetration into the main member. Full penetration is the screw length minus the side member thickness
  2. Allowable loads are shown at the wood load duration factor of CD = 1.0. Loads may be increase for load duration per the building code up to a CD = 1.6. Tabulated values must be multiplied by all applicable adjustment factors per the NDS.
  3. Minimum fastener spacing requirements: 6" end distance, 1 7/16" edge distance, 5/8" between staggered rows of fasteners, 4" between non-staggered rows of fasteners and 8" between fasteners in a row.
  4. For in-service moisture content greater than 19%, use CM = 0.7.

SDWH — Douglas Fir-Larch, Southern Pine, Spruce Pine Fir and Hem Fir Lumber Allowable Withdrawal Loads Table
  1. The tabulated reference withdrawal design value, W, is in pounds per inch of the thread penetration into the side grain of the main member.
  2. The tabulated reference withdrawal design value, WMax, is in pounds where the entire thread length must penetrate into the side grain of the main member.
  3. Tabulated reference withdrawal design values, W and WMax, are shown at a CD = 1.0. Loads may be increased for load duration per the building code up to a CD = 1.6. Tabulated values must be multiplied by all applicable adjustment factors from the NDS as referenced in the IBC or IRC.
  4. Embedded thread length is that portion held in the main member including the screw tip.
  5. Values are based on the lesser of withdrawal from the main member or pull-through of a 1 1/2" side member.
  6. For in-service moisture content greater than 19%, use CM = 0.7.

SDWH — 2009 and 2012 IRC Compliant Spacing for a Sawn Lumber Deck Ledger to Band Joist
Table
  1. SDWH screw spacing values are equivalent to 2009 IRC Table R502.2.2.1. The table above also provides SDWH screw spacing for a wider range of materials commonly used for band joists, and an alternate loading condition as required by some jurisdictions.
  2. Solid-sawn band joists shall be Spruce-Pine-Fir, Hem-Fir, Douglas Fir-Larch, or Southern Pine species. Ledger shall be Hem-Fir, Douglas Fir-Larch, or Southern Pine species.
  3. Fastener spacings are based on the lesser of single fastener ICC-ES AC233 testing of the Strong-Drive® SDWH screw with a safety factor of 5.0 or ICC-ES AC13 ledger assembly testing with a factor of safety of 3.0. Spacing includes NDS wet service factor adjustment.
  4. Screws shall be placed at least 1 1/2" from the top or bottom of the ledger or band joist, 6" from the end of the ledger with 3" between rows and spaced per the table. See figure below.
  5. Structural sheathing between the ledger and band shall be a maximum of 1/2" thick and fastened per code.



next  top Code Reports (PDFs):
Legacy Reports
  IAPMO UES ER ICC-ES ESR CITY OF LOS ANGELES STATE OF FLORIDA ICC-ES NER ICC-ES ER ICC-ES ES
SDWHSee specific model numbers for code listings.
SDWH191000DB ER-192   RR25906        
SDWH19300DB ER-192   RR25906        
SDWH19400DB ER-192   RR25906        
SDWH19600DB ER-192   RR25906        
SDWH19800DB ER-192   RR25906        
SDWSSee specific model numbers for code listings.
SDWS19600 ER-192            
SDWS19712 ER-192            
SDWS221000 ER-192            
SDWS221000DB ER-192   RR25906        
SDWS221100 ER-192            
SDWS221200 ER-192            
SDWS221500 ER-192            
SDWS22300DB ER-192   RR25906        
SDWS22400DB ER-192   RR25906        
SDWS22500DB ER-192   RR25906        
SDWS22600DB ER-192   RR25906        
SDWS22800 ER-192            
SDWS22800DB ER-192   RR25906        
SDWS22900 ER-192            



next  topDrawings: To download drawings, right-click or Ctrl-click on the link, then choose "Save Target As..."
Download the Simpson Strong-Tie® AutoCAD® Menu, which allows you to insert Ortho views directly into your AutoCAD drawing.

 ORTHOGRAPHIC
PERSPECTIVE
SDWHNone for this model None for this model
SDWH191000None for this model None for this model
SDWH19300 SDWH19300 top view: DWG | DXF
SDWH19300 left view: DWG | DXF
None for this model
SDWH19400None for this model None for this model
SDWH19600None for this model None for this model
SDWH19800None for this model None for this model
SDWSNone for this model None for this model
SDWS221000None for this model None for this model
SDWS22300 SDWS22300 top view: DWG | DXF
SDWS22300 left view: DWG | DXF
None for this model
SDWS22400None for this model None for this model
SDWS22500None for this model None for this model
SDWS22600None for this model None for this model
SDWS22800None for this model None for this model

   
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