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Round Countersunk Head Window Screw

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Round Countersunk Head Window Screw

Ideal for window construction

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Available in 14 versions

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Increased corrosion protection

The corrosion protection is greatly increased due to thick-film passivation and Deltacoll-coating or KTL black (duplex process).


In the salt-spray mist test lasted 240 hours without red rust on the base metal corrosion.



Heightened heat resistance

Heat-resistance of the corrosion-protection coating: 150°C



Special thread with needle tip

Extreme durability

Accompanied with CR(VI)- free corosion-protecting coating enabling it to withstand variable climates

NoticeExtreme Durability

Accompanied with CR(VI)-free corrosion-protecting coating enabling it to withstand variable climates, furthermore boasts extreme heat resistance. This product is suitable for fastening friction stays to unreinforced sections.

EN 9227-NSS

The above application instructions are recommendations given on the basis of our own tests and experience. We recommend that you carry out your own tests before use. Due to the great variety of different applications and storage and processing conditions, we cannot guarantee a particular application result. We will not accept legal liability for any advice or technical information provided by our free customer hotline unless this advisory service and/or technical information is part of the contractually agreed performance owed by us, or the customer service employee acted wilfully or intentionally. We guarantee the consistent quality of our products and reserve the right to make technical changes and improvements.