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Fasteners
CLT connection
Screws
Structural screws for CLT
SWD

Structural Double Threaded Wood Screw

SWD is a construction screw designed to connect two timber members together. The small cap-style head and double thread creates a flexible, hidden assembly with high strength. The differentiated thread pitch creates a clamping effect, reducing the risk of gaps between the timber members.

Technical Data Sheet
CE Marking
CE Marking
ETA
ETA
EPD
EPD
Protec® +
Protec® +
Service class 2
Service class 2
Outdoor
Outdoor
Fastener Designer
Fastener Designer
SWD_SSTBP_homepage_PL_pl
SWD_SSTBP_homepage_LV_en
SWD_SSTBP_homepage_NO_no
SWD_SSTBP_homepage_DK_da
SWD Main Image.jpg

Product Details

Images

SWD Prod image.jpg
SWD Main Image.jpg
SWD Photo Gallery 1.jpg

Features

Features

  • CE marked to EN14592
  • Cap-style head
  • Double threaded
  • Chisel point

Material

Steel - Protec®+ coating

Application

Common Applications

Timber to timber connections

Technical Data

Product dimensions

Dimensions

Product dimensions
ReferenceFasteners Dimensions[mm]
Item CodeGunnebo art. nrProduct Dimensions[mm]
d[mm]l[mm]dh[mm]d1[mm]Ah[mm]ht[mm]lg1[mm]lg2[mm]tfix[mm]Driver Bit[mm]
SWD6.5X6575425766626.56584--2821.5-T-30
SWD6.5X9075426766656.59084--4033.5-T-30
SWD6.5X13075427768056.513084--4033.5-T-30
SWD6.5X16075428766536.516084--6558.5-T-30
SWD6.5X19075429766556.519084--8073.5-T-30
SWD6.5X22075430766596.5220104--9588.5-T-30
SWD8.0X9075431767007.890105.4--4031.5-T-40
SWD8.0X13075432768067.8130105.4--4031.5-T-40
SWD8.0X16075433766697.8160105.4--6556.5-T-40
SWD8.0X19075434767647.8190105.4--8071.5-T-40
SWD8.0X22075435766777.8220105.4--9586.5-T-40
SWD8.0X24575436766817.8245105.4--107.599-T-40
SWD8.0X27575437766847.8275105.4--107.599-T-40
SWD8.0X30075438766947.8300105.4--135126.5-T-40
SWD8.0X33075439766977.8330105.4--135126.5-T-40

Product characteristic properties

ReferenceScrew Parameters
Characteristic parameters
Characteristic Yield Moment – My,ₖ[Nm]Characteristic withdrawal parameter - fₐₓ,ₖ,₉₀°[N/mm²]Characteristic head pull-through parameter - fₕₑₐd,ₖ[N/mm²]Characteristic tensile capacity - fₜₑₙₛ,ₖ[kN]Characteristic torsional strength - ftor,k[Nm]Torsional ratio
SWD6.5X6512.413.7-14.512.6≥ 1,5
SWD6.5X9012.413.7-14.512.6≥ 1,5
SWD6.5X13012.413.7-14.512.6≥ 1,5
SWD6.5X16012.413.7-14.512.6≥ 1,5
SWD6.5X19012.413.7-14.512.6≥ 1,5
SWD6.5X22012.413.7-14.512.6≥ 1,5
SWD8.0X9026.813.1-25.327.7≥ 1,5
SWD8.0X13026.813.1-25.327.7≥ 1,5
SWD8.0X16026.813.1-25.327.7≥ 1,5
SWD8.0X19026.813.1-25.327.7≥ 1,5
SWD8.0X22026.813.1-25.327.7≥ 1,5
SWD8.0X24526.813.1-25.327.7≥ 1,5
SWD8.0X27526.813.1-25.327.7≥ 1,5
SWD8.0X30026.813.1-25.327.7≥ 1,5
SWD8.0X33026.813.1-25.327.7≥ 1,5
SWD6.512.413.7-14.512.6-
SWD826.813.1-25.327.7-

Certification

Declaration of Performance (DoP)

uk-dop-e21-0670-02-s-2.pdf
Show history
uk-dop-e21-0670.pdf

European Technical Assessment (ETA)

eta-21-0670-2025-10-17.pdf
Show history
eta210670-2021-12-09-cor-1.pdf

Environmental Product Declarations (EPD)

epd-certificate-sst-screws

CAD and BIM Library

2D

SWD6.5X90

SWD8.0X190

SWD8.0X160

SWD6.5X190

SWD8.0X220

SWD8.0X300

SWD6.5X220

SWD8.0X330

SWD6.5X130

SWD6.5X160

SWD8.0X245

SWD8.0X275

SWD8.0X90

SWD8.0X130

SWD6.5X65

3D

SWD6.5X90

SWD8.0X190

SWD8.0X160

SWD6.5X190

SWD8.0X220

SWD8.0X300

SWD6.5X220

SWD8.0X330

SWD6.5X130

SWD6.5X160

SWD8.0X245

SWD8.0X275

SWD8.0X90

SWD8.0X130

SWD6.5X65

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Simpson Strong-Tie Poland

Simpson Strong-Tie Etanco P.S.A.

ul. Karczunkowska 42
02-871 Warszawa
Poland

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