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Strong-Drive® SDWS TIMBER Screw 

Strong-Drive® SDWS TIMBER Screw

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 applications.

Key Features

  • Bold thread design provides superior holding power
  • Patented 4CUT™ tip ensures fast starts, reduces installation torque and eliminates the need for predrilling in most applications
  • Under-head nibs offer greater control when seating the head
  • Large 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 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

Model No. Length (in.) Drive Type Head Diameter (in.) Head Type Thread Length Shank Diameter (in.) Point Type Coating/Material Packaging Quantity
SDWS221000DB 10 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 250
SDWS221000DB-R50 10 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 50
SDWS221000DBRC12 10 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 12
SDWS22300DB 3 T-40 6-Lobe 0.75 Low Profile Head 1 1/2 0.220 4-Cut Point Double-Barrier Coating 950
SDWS22300DBMB 3 T-40 6-Lobe 0.75 Low Profile Head 1 1/2 0.220 4-Cut Point Double-Barrier Coating 250
SDWS22300DB-R50 3 T-40 6-Lobe 0.75 Low Profile Head 1 1/2 0.220 4-Cut Point Double-Barrier Coating 50
SDWS22300DB-RC12 3 T-40 6-Lobe 0.75 Low Profile Head 1 1/2 0.220 4-Cut Point Double-Barrier Coating 12
SDWS22400DB 4 T-40 6-Lobe 0.75 Low Profile Head 2 3/8 0.220 4-Cut Point Double-Barrier Coating 600
SDWS22400DBMB 4 T-40 6-Lobe 0.75 Low Profile Head 2 3/8 0.220 4-Cut Point Double-Barrier Coating 250
SDWS22400DB-R50 4 T-40 6-Lobe 0.75 Low Profile Head 2 3/8 0.220 4-Cut Point Double-Barrier Coating 50
SDWS22400DB-RC12 4 T-40 6-Lobe 0.75 Low Profile Head 2 3/8 0.220 4-Cut Point Double-Barrier Coating 12
SDWS22500DB 5 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 600
SDWS22500DBMB 5 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 250
SDWS22500DB-R50 5 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 50
SDWS22500DB-RC12 5 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 12
SDWS22600DB 6 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 500
SDWS22600DBMB 6 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 250
SDWS22600DB-R50 6 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 50
SDWS22600DB-RC12 6 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 12
SDWS22800DB 8 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 400
SDWS22800DBMB 8 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 250
SDWS22800DB-R50 8 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point Double-Barrier Coating 50
SDWS22800DB-RC12 8 T-40 6-Lobe 0.75 Low Profile Head 2 3/4 0.220 4-Cut Point 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.

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