Construction screw for on-rafter insulation, 8.0 x 165 mm, double thread – ETA approval – 50 pieces

The 8.0 x 165 mm construction screw was specially developed for solar roof hook mounting on insulated pitched roofs. Its extra-long design allows it to securely penetrate the rafter insulation into the load-bearing rafter. Double thread for additional grip.

Technical Data

• Dimensions: 8.0 x 165 mm
• Material: hardened carbon steel
• Surface: electro-galvanized
• Thread type: double thread
• Head shape: cylinder head
• Approval: ETA
• Drive: TX40
• Packaging unit: 50 pieces

Advantages at a Glance

• Specially designed for penetrating rafter insulation
• Double thread for secure hold in the load-bearing rafter
• Extra length of 165 mm for insulated pitched roofs
• ETA approval for standard-compliant installation

Application Area for Solar Installation

For mounting roof hooks on insulated pitched roofs where the rafter insulation needs to be penetrated.

Frequently Asked Questions

What is the 165mm long screw needed for?
To penetrate the rafter insulation into the load-bearing rafter.

What does the double thread do?
Provides additional grip between the roof hook, insulation, and rafter.