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Information on this page has been updated since the printing of the C-2013 catalog. To view the specific changes made to this page in detail, visit the Catalog Changes and Corrections page. |
Strong-Drive® SDWS and SDWH Structural
Wood Screws
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
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
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
SDWS screw heads
Lengths Stamp
3"
4"
5"
6"
8"
10"
Identification on all
SDWH screw heads
Lengths Stamp
SDWH screw heads
Lengths Stamp
3"
4"
6"
8"
10"
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NEW All lengths of SDWS and SDWH screws now available in 250ct. package sizes.
See model numbers in the Fastener Finder: SDWS | SDWH
See model numbers in the Fastener Finder: SDWS | SDWH
SDWS Screw Product Information
SDWH Screw Product Information
SDWS Spacing Requirements
SDWS Screw Shear, Douglas Fir-Larch and Southern Pine Lumber
- All applications are based on full penetration into the main member. Full penetration is the screw length minus the side member thickness.
- 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.
- 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.
- For in-service moisture content greater than 19%, use CM = 0.7.
SDWS Screw Shear, Spruce Pine Fir and Hem Fir Lumber
- All applications are based on full penetration into the main member. Full penetration is the screw length minus the side member thickness.
- 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.
- 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.
- 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
- The tabulated reference withdrawal design value, W, is in pounds per inch of the thread penetration into the side grain of the main member.
- 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.
- 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.
- Embedded thread length is that portion held in the main member including the screw tip.
- Values are based on the lesser of withdrawal from the main member or pull-through of a 1 1/2" side member.
- 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
- 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.
- 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.
- 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.
- Multiple ledger plies shall be fastened together per code independent of the SDWS screws.
- 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
- Structural sheathing between the ledger and band shall be a maximum of 1/2" thick and fastened per code.
SDWH Spacing Requirements
SDWH Screw Shear, Douglas Fir-Larch and Southern Pine Lumber
- All applications are based on full penetration into the main member. Full penetration is the screw length minus the side member thickness
- 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.
- 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.
- For in-service moisture content greater than 19%, use CM = 0.7.
Shear Loads, Spruce Pine Fir and Hem Fir Lumber
- All applications are based on full penetration into the main member. Full penetration is the screw length minus the side member thickness
- 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.
- 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.
- 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
- The tabulated reference withdrawal design value, W, is in pounds per inch of the thread penetration into the side grain of the main member.
- 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.
- 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.
- Embedded thread length is that portion held in the main member including the screw tip.
- Values are based on the lesser of withdrawal from the main member or pull-through of a 1 1/2" side member.
- 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
- 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.
- 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.
- 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.
- 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.
- 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 | |
| SDWH | See specific model numbers for code listings. | ||||||
| SDWH191000 | ER-192 | ||||||
| SDWH19300 | ER-192 | ||||||
| SDWH19400 | ER-192 | ||||||
| SDWH19600 | ER-192 | ||||||
| SDWH19800 | ER-192 | ||||||
| SDWS | See specific model numbers for code listings. | ||||||
| SDWS221000 | ER-192 | ||||||
| SDWS22300 | ER-192 | ||||||
| SDWS22400 | ER-192 | ||||||
| SDWS22500 | ER-192 | ||||||
| SDWS22600 | ER-192 | ||||||
| SDWS22800 | 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 | |
| SDWH | None for this model | None for this model |
| SDWH191000 | None for this model | None for this model |
| SDWH19300 |
SDWH19300 top view: DWG | DXF
SDWH19300 left view: DWG | DXF |
None for this model |
| SDWH19400 | None for this model | None for this model |
| SDWH19600 | None for this model | None for this model |
| SDWH19800 | None for this model | None for this model |
| SDWS | None for this model | None for this model |
| SDWS221000 | None for this model | None for this model |
| SDWS22300 |
SDWS22300 top view: DWG | DXF
SDWS22300 left view: DWG | DXF |
None for this model |
| SDWS22400 | None for this model | None for this model |
| SDWS22500 | None for this model | None for this model |
| SDWS22600 | None for this model | None for this model |
| SDWS22800 | None for this model | None for this model |
Strong-Drive® Structural Wood Screws for Interior and Exterior Fastening Applications