SDW

Structural Wood Screw

The Strong-Drive® SDW screw is a 8.0mm diameter, high-strength structural wood screw specifically designed for fastening multi-ply wood members together such as plated trusses, engineered timber products and solid-sawn timber. CE marked to EN14592. Driver bit included in every box. 

CE Marking
Service class 2
Indoor
Black finish
Solid Wood

Product Details

Images

Features

Material

Heat treated carbon steel - black E-coat™

Features

The SDW installs easily with no pre-drilling and is available in optimized lengths for fastening 2, 3 and 4-ply trusses or 45mm engineered timber such as Laminated Veneer Lumber (LVL). The SDW enables single-side fastening, while still allowing concurrent loading on both sides of the assembly to the full allowable head or point-side load of the fastener.

  • CE marked to EN14592
  • Low-profile head for reduced interference during handling or installation of hardware on the assembly
  • High shear values enable wider screw spacing
  • Bold thread design firmly clinches plies together to close gaps in multi-ply assemblies
  • Optimal screw lengths provide maximum point side penetration
  • Driver bit included in each box

Application

Common Applications

  • Fastening of multiple wood elements including uprights and trusses
  • Solid wood
  • Engineered timber

Warning:

Industry studies show that hardened fasteners can experience performance problems in wet or corrosive environments. Accordingly, the SDW timber screws should only be used in dry, interior and non-corrosive environments e.g. Service class 1 & 2.

Technical Data

Dimensions

Product Dimensions

References Fastener Dimensions [mm] Driver Bit
l lg d1 d dh
SDW22258-R50E66365.6819T-40
SDW22300-R50E7637819T-40
SDW22338-R50E8640819T-40
SDW22438-R50E11137819T-40
SDW22458-R50E11737819T-40
SDW22500-R50E12740819T-40
SDW22600-R50E15237819T-40
SDW22638-R50E16237819T-40
SDW22634-R50E17240819T-40

Structural Parameters - hEN14592

References Characteristic Yield Moment - Threaded Section  - My,k [My.k] [Nm] Characteristic withdrawal parameter - fax,k,90° [fax.k.90°] [N/mm²] Characteristic head pull-through parameter - fhead,k [fhead.k] [N/mm²] Characteristic tensile capacity - ftens,k [ftens.k] [kN] Characteristic torsional strength - ftor,k [ftor.k] [Nm] Torsional ratio
SDW22258-R50E17.413.221.421.424.24.5
SDW22300-R50E17.413.221.421.424.24.5
SDW22338-R50E17.413.221.421.424.24.5
SDW22438-R50E17.413.221.421.424.24.5
SDW22458-R50E17.413.221.421.424.24.5
SDW22500-R50E17.413.221.421.424.24.5
SDW22600-R50E17.413.221.421.424.24.5
SDW22638-R50E17.413.221.421.424.24.5
SDW22634-R50E17.413.221.421.424.24.5

Installation

Installation

Installation

  • SDW screws install best with a low-speed drill and a T40 6-lobe bit (bit included with every box of screws).
  • Pre-drilling is typically not required. SDW screws may be installed through metal truss plates as approved by the truss designer
  • Drive the fastener so that the top of the head is slightly embedded into the top surface of the timber. To ensure correct performance, do not under or over-drive the fastener.
  • Individual screw locations may be adjusted up to 75mm to avoid conflicts with other hardware or to avoid timber defects.

Certification

Declaration of Performance (DoP)

CAD Library

DWG (2D) REVIT (2D) DWG (3D) REVIT (3D) SAT XML
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Contact

Simpson Strong-Tie U.K.

Simpson Strong-Tie

Cardinal Point, Winchester Road
Tamworth
Staffordshire
B78 3HG
United Kingdom