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DWZ Double Threaded Insulation Screw 7mm x 300mm packed in 50 pieces per box
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DWZ Double Threaded Insulation Screw 7mm x 300mm packed in 50 pieces per box

00037
£112.00
In stock
1
Product Details
Brand: Rothoblaas Holztechnic

NEW DWZ Double Threaded Screw for fixing high and low density wood fibre insulation. Suitable for: wood based panels; solid timber; glue laminated timber; CLT, LVL and high density woods in service class 1 and 2 applications. Part of the Rothoblass Holztechnic range.

Key Performance Characteristics

Prevents thermal bridging

Double threaded

Suitable for fixing low density insulation such as STEICOflex and high density insulation such as STEICOtherm

Cylindrical head ideal for counter sinking into joist

Bright Zinc plated Carbon Steel

Diameter 7.0mm, 9.0mm

Lengths 220mm to 520mm

Technical Properties



Nominal Diameter d1 mm 7 9
Head Diameter dk mm 9.5 11.5
Tip Diameter d2 mm 4.6 5.9
Shank diameter ds mm 5.0 6.5
Characteristic Yield Moment Myk Nmm 14174 27244
Characteristic withdrawal resistance parameter Fax,k N/mm2 11.7 11.7
Characteristic tensile strength Ftens,k kN 15.4 25.4
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