5.5x85 Countersunk Wood to Heavy Section Steel Wing Tip Exterior S/D Screw Bi Metal/Silver Pack 100
Description A high performance wing tip self-drilling screw designed for fixing timber to heavy section steel without the need for pre-drilling. The wings ream out the timber to prevent drag, breaking off on contact with the steel to allow the thread to tap efficiently into the metal for a strong and secure fixing.
Key Features
Bi-metal A2 stainless steel body with hardened drill point for strength and corrosion resistance
Exterior (Silver Organic) coating for durability in external environments
Wing tip design clears timber to prevent binding and burning out
Wings break off when contacting steel for effective self-tapping
Designed for fixing timber to heavy section steel up to 12mm
Partially threaded for improved clamping performance
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