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Timco Heavy Section Self-Drilling Screws 5.5 x 65mm - Steel Cladding Fixings

Timco Heavy Section Self-Drilling Screws 5.5 x 65mm - Steel Cladding Fixings

£19.99
£19.99
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Engineered for direct fastening of built-up cladding and thick metal profiles into structural steel up to 12mm thick.

A great choice if you are looking to secure thicker profiles, timber battens, or built-up cladding sheets directly into heavy steel purlins and universal columns. Equipped with an extended 65mm shank, an integrated 16mm EPDM washer, and a heavy-duty No. 5 drill point, these robust fasteners deliver a dependable, weathertight fixing without the delay of pre-drilling.

Why Choose TIMCO Heavy Section Screws?

  • High-Capacity Structural Drilling: Designed with an extended 15mm No. 5 drill point that bores directly through hot-rolled structural steel beams and RSJs up to 12mm thick in a single rapid action.
  • Long-Reach Fastening: The 65mm overall length and 43mm effective thread provide the necessary reach for fixing thicker corrugated sheets, timber-to-steel details, or composite spacers cleanly and securely.
  • Reliable Weathertight Barrier: Features a pre-fitted 16mm vulcanised EPDM washer that seats firmly against profiled sheeting, creating a permanent weatherproof seal that halts water ingress.
  • Reduced Driving Resistance: Crafted with metric V flutes and a torque-relieving shank slash that channels swarf away from the threads, significantly reducing driving resistance and guarding against sheared fixings.
  • 500-Hour Exterior Durability: Protected with a multi-layer silver organic coating tested to withstand 500 hours of salt spray, delivering Grade 3 corrosion protection across agricultural and industrial settings.

Technical Specification:

Brand TIMCO
Product Code H65W16B
Product Type Heavy Section Self-Drilling Screw (Tek Screw)
Dimensions (Gauge x Length) 5.5 x 65mm (12 Gauge)
Point Type & Drill Tip Length Self-Drilling No. 5 (15mm Drill Tip)
Maximum Drilling Thickness (MDT) Up to 12.0mm Heavy Section Steel
Effective Thread Length 43mm (Fully Threaded)
Thread Geometry Metric with V Flutes & Torque-Relieving Slash
Head Type & Dimensions Flanged Hexagon (12mm Flange Diameter, 5.6mm Height)
Drive Method 8mm (5/16") Hexagonal Socket
Washer Specification 16mm Bonded EPDM Vulcanised Rubber Washer
Core Material Case & Core-Hardened Carbon Steel
Finish & Plating Silver Organic Exterior Plating (500 Hours Salt-Spray Tested)
Corrosion Rating Rating 3 (Urban and industrial areas with a low-salt atmosphere)
Standard Compliance BS EN 10666 / DIN 7504
Compatible Substrates Heavy Section Steel, Hot-Rolled Beams, Structural Purlins
Pack Quantity & Type 100 Pieces per Box (1.18kg)
Pack Dimensions 138 x 94 x 94mm
Barcode 5055017532476

SKU: SX-H65W16B

MPN: MET0667-100

ID: 37802

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