Description
Timco 3.9 x 25 Window Fabrication Screws are professional self-tapping, self-drilling fixings designed for reinforced PVCu window and door frame fabrication. Manufactured for secure fixing into steel or aluminium reinforced sections, they deliver strong mechanical grip without requiring pilot holes in many applications.
Timco 3.9 x 25 Window Fabrication Screws – Product Details
These screws feature a countersunk head to allow a flush finish where a clean surface is required. The PH (Phillips) drive ensures consistent bit engagement and controlled installation.
The self-tapping thread combined with a self-drilling point enables direct fixing into reinforced frame sections, improving fabrication speed and reducing labour time.
Key Specifications:
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Size: 3.9mm diameter x 25mm length
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Head: Countersunk
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Drive: PH (Phillips)
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Thread: Self-tapping
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Point: Self-drilling
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Finish: Zinc plated
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Pack Quantity: 1000
Ideal for:
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PVCu window fabrication
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Reinforced frame assembly
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Door frame construction
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Professional glazing manufacture
Zinc plating provides corrosion resistance suitable for internal and sheltered environments.







