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Strong-Drive® SDWS TIMBER Screw 

Strong-Drive® SDWS TIMBER Screw

Newly redesigned for faster starts and less torque while driving.

Designed to provide an easy-to-install, high-strength alternative to through-bolting and traditional lag screws. The Strong-Drive SDWS Timber screw is ideal for the contractor and do-it-yourselfer alike. It is code listed under IAPMO UES ER-192 and meets 2012 and 2015 IRC® and IBC® code requirements for several common wood framing and engineered-wood applications.

Key Features

  • New — Patented SawTooth™ point ensures fast starts, reduces installation torque and eliminates the need for predrilling in most applications
  • Bold thread design provides superior holding power
  • Under-head nibs offer greater control when seating the head
  • Large low-profile washer head provides maximum bearing area (0.75" head dia.)
  • Size identification on all SDWS screw heads
  • 6-lobe T-40 drive reduces driver-bit cam-outs, resulting in easier installations and longer bit life

Double-barrier coating provides corrosion resistance equivalent to hot-dip galvanization, making it suitable for certain exterior and preservative-treated wood applications, as described in the evaluation report.

Applications

  • Structural wood-to-wood and engineered-wood connections including ledgers

Product Includes

  • Retail and mini-bulk packs include one 6-lobe, T-40 driver bit; bulk packs include two driver bits

Related Literature

Product Information Table

Fastener Production Information and Stuff & Things
Model No. Coating/Material Length (in.) Head Diameter (in.) Shank Diameter (in.) Drive Type Head Type Thread Length Point Type Packaging Qty. UPC
SDWS221000DB Double-Barrier Coating 10 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 250 746056005346
SDWS221000DB-R50 Double-Barrier Coating 10 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 50 746056005339
SDWS221000DBRC12 Double-Barrier Coating 10 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 12 746056005315
SDWS22300DB Double-Barrier Coating 3 0.750 0.220 T-40 6-Lobe Washer Head 1 1/2 SawTooth™ Point 950 746056005193
SDWS22300DB-R50 Double-Barrier Coating 3 0.750 0.220 T-40 6-Lobe Washer Head 1 1/2 SawTooth™ Point 50 746056005186
SDWS22300DB-RC12 Double-Barrier Coating 3 0.750 0.220 T-40 6-Lobe Washer Head 1 1/2 SawTooth™ Point 12 746056005179
SDWS22300DBMB Double-Barrier Coating 3 0.750 0.220 T-40 6-Lobe Washer Head 1 1/2 SawTooth™ Point 250 746056102106
SDWS22400DB Double-Barrier Coating 4 0.750 0.220 T-40 6-Lobe Washer Head 2 3/8 SawTooth™ Point 600 746056005223
SDWS22400DB-R50 Double-Barrier Coating 4 0.750 0.220 T-40 6-Lobe Washer Head 2 3/8 SawTooth™ Point 50 746056005216
SDWS22400DB-RC12 Double-Barrier Coating 4 0.750 0.220 T-40 6-Lobe Washer Head 2 3/8 SawTooth™ Point 12 746056005209
SDWS22400DBMB Double-Barrier Coating 4 0.750 0.220 T-40 6-Lobe Washer Head 2 3/8 SawTooth™ Point 250 746056168201
SDWS22500DB Double-Barrier Coating 5 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 600 746056005254
SDWS22500DB-R50 Double-Barrier Coating 5 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 50 746056005247
SDWS22500DB-RC12 Double-Barrier Coating 5 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 12 746056005230
SDWS22500DBMB Double-Barrier Coating 5 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 250 746056226505
SDWS22600DB Double-Barrier Coating 6 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 500 746056005285
SDWS22600DB-R50 Double-Barrier Coating 6 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 50 746056005278
SDWS22600DB-RC12 Double-Barrier Coating 6 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 12 746056005261
SDWS22600DBMB Double-Barrier Coating 6 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 250 746056682806
SDWS22800DB Double-Barrier Coating 8 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 400 746056005322
SDWS22800DB-R50 Double-Barrier Coating 8 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 50 746056005308
SDWS22800DB-RC12 Double-Barrier Coating 8 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 12 746056005292
SDWS22800DBMB Double-Barrier Coating 8 0.750 0.220 T-40 6-Lobe Washer Head 2 3/4 SawTooth™ Point 250 746056116707

Product Information Table

Model No. Length (in.) Drive Type Head Diameter (in.) Head Type Thread Length Shank Diameter (in.) Coating/Material Packaging Quantity
SDWS221000DB 10 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 250
SDWS221000DB-R50 10 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 50
SDWS221000DBRC12 10 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 12
SDWS22300DB 3 T-40 6-Lobe 0.75 Low Profile Head 1 1/2 0.220 Double-Barrier Coating 950
SDWS22300DBMB 3 T-40 6-Lobe 0.75 Low Profile Head 1 1/2 0.220 Double-Barrier Coating 250
SDWS22300DB-R50 3 T-40 6-Lobe 0.75 Low Profile Head 1 1/2 0.220 Double-Barrier Coating 50
SDWS22300DB-RC12 3 T-40 6-Lobe 0.75 Low Profile Head 1 1/2 0.220 Double-Barrier Coating 12
SDWS22400DB 4 T-40 6-Lobe 0.75 Low Profile Head 2 3/8 0.220 Double-Barrier Coating 600
SDWS22400DBMB 4 T-40 6-Lobe 0.75 Low Profile Head 2 3/8 0.220 Double-Barrier Coating 250
SDWS22400DB-R50 4 T-40 6-Lobe 0.75 Low Profile Head 2 3/8 0.220 Double-Barrier Coating 50
SDWS22400DB-RC12 4 T-40 6-Lobe 0.75 Low Profile Head 2 3/8 0.220 Double-Barrier Coating 12
SDWS22500DB 5 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 600
SDWS22500DBMB 5 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 250
SDWS22500DB-R50 5 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 50
SDWS22500DB-RC12 5 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 12
SDWS22600DB 6 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 500
SDWS22600DBMB 6 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 250
SDWS22600DB-R50 6 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 50
SDWS22600DB-RC12 6 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 12
SDWS22800DB 8 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 400
SDWS22800DBMB 8 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 250
SDWS22800DB-R50 8 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 50
SDWS22800DB-RC12 8 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 Double-Barrier Coating 12
    These coated fasteners possess a level of corrosion resistance that makes them suitable for use in some exterior and corrosive environments and with some preservative-treated woods. For applications in higher-exposure applications, consider type-300 series stainless-steel fasteners for superior corrosion resistance. See additional important information before selecting a fastener for a specific application.

Load Tables

SDWS Timber Screw — Allowable Shear Loads — Douglas Fir-Larch and Southern Pine Lumber

See footnotes below.

SDWS Timber Screw — Allowable Shear Loads — Spruce-Pine-Fir and Hem-Fir Lumber

  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 increased 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 to achieve table loads: 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.
  5. Loads are based on installation into the side grain of the wood with the screw axis perpendicular to the face of the member.

SDWS Timber Screw — Allowable Withdrawal Loads — Douglas Fir-Larch, Southern Pine, Spruce-Pine-Fir and Hem-Fir Lumber

  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 Timber Screw — 2012 and 2015 IRC Compliant Spacing for a Sawn Lumber Deck Ledger to Rim Board

  1. SDWS screw spacing values are equivalent to 2012/2015 IRC Table R507.2. The table above also provides SDWS screw spacing for a wide range of materials commonly used for rim board, and an alternate loading condition as required by some jurisdictions.
  2. Sawn lumber rim board 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 Timber screw with a safety factor of 5.0 or ICC-ES AC13 assembly testing with a factor of safety of 5.0. Spacing includes NDS wet service factor adjustment.
  4. Multiple ledger plies shall be fastened together per code independent of the SDWS screws.
  5. Rows of screws shall be vertically offset and evenly staggered. Screws shall be placed 1 1/2" to 2" from the top and bottom of the ledger or rim board with 3" minimum and 6" maximum between rows and spaced per the table. End screws shall be located 6" from the end and at 1 1/2" to 2" from the bottom of the ledger. For screws located at least 2" but less than 6" from the end, use 50% of the load per screw and 50% of the table spacing between the end screw and the adjacent screw, and for screws located between 2" and 4" from the end, predrill using a 5/32" drill.
  6. Structural sheathing between the ledger and rim board shall be a maximum of 1/2" thick and fastened per code.

See additional Load Tables, Technical Data and Installation Instructions for the Strong-Drive® SDWS Timber screw

Drawings

Part Orthographic Perspective
SDWSNone None
SDWS221000DB
SDWS221000DB bottom view
DWG DXF
SDWS221000DB front view
DWG DXF
SDWS221000DB left view
DWG DXF
SDWS221000DB right view
DWG DXF
SDWS221000DB top view
DWG DXF
High Wind-Resistant Construction D137: Sole Plate and Ledger Connections
DWG DXF
High Wind-Resistant Construction D138: Sole Plate and Ledger Connections: Strong-Drive¨ SDWS TIMBER Screw Spacing Requirements
DWG DXF
SDWS221000DB
DWG DXF
SDWS22300DB
SDWS22300DB bottom view
DWG DXF
SDWS22300DB front view
DWG DXF
SDWS22300DB left view
DWG DXF
SDWS22300DB right view
DWG DXF
SDWS22300DB top view
DWG DXF
High Wind-Resistant Construction D137: Sole Plate and Ledger Connections
DWG DXF
High Wind-Resistant Construction D138: Sole Plate and Ledger Connections: Strong-Drive¨ SDWS TIMBER Screw Spacing Requirements
DWG DXF
SDWS22300DB
DWG DXF
SDWS22400DB
SDWS22400DB bottom view
DWG DXF
SDWS22400DB front view
DWG DXF
SDWS22400DB left view
DWG DXF
SDWS22400DB right view
DWG DXF
SDWS22400DB top view
DWG DXF
High Wind-Resistant Construction D137: Sole Plate and Ledger Connections
DWG DXF
High Wind-Resistant Construction D138: Sole Plate and Ledger Connections: Strong-Drive¨ SDWS TIMBER Screw Spacing Requirements
DWG DXF
SDWS22400DB
DWG DXF
SDWS22500DB
SDWS22500DB bottom view
DWG DXF
SDWS22500DB front view
DWG DXF
SDWS22500DB left view
DWG DXF
SDWS22500DB right view
DWG DXF
SDWS22500DB top view
DWG DXF
High Wind-Resistant Construction D137: Sole Plate and Ledger Connections
DWG DXF
High Wind-Resistant Construction D138: Sole Plate and Ledger Connections: Strong-Drive¨ SDWS TIMBER Screw Spacing Requirements
DWG DXF
SDWS22500DB
DWG DXF
SDWS22600DB
SDWS22600DB bottom view
DWG DXF
SDWS22600DB front view
DWG DXF
SDWS22600DB left view
DWG DXF
SDWS22600DB right view
DWG DXF
SDWS22600DB top view
DWG DXF
High Wind-Resistant Construction D137: Sole Plate and Ledger Connections
DWG DXF
High Wind-Resistant Construction D138: Sole Plate and Ledger Connections: Strong-Drive¨ SDWS TIMBER Screw Spacing Requirements
DWG DXF
SDWS22600DB
DWG DXF
SDWS22800DB
SDWS22800DB bottom view
DWG DXF
SDWS22800DB front view
DWG DXF
SDWS22800DB left view
DWG DXF
SDWS22800DB right view
DWG DXF
SDWS22800DB top view
DWG DXF
High Wind-Resistant Construction D137: Sole Plate and Ledger Connections
DWG DXF
High Wind-Resistant Construction D138: Sole Plate and Ledger Connections: Strong-Drive¨ SDWS TIMBER Screw Spacing Requirements
DWG DXF
SDWS22800DB
DWG DXF