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Big Dog Wood Screw Acid-Resistant Stainless Steel A4 6x80mm T30 50pcs Fast 281607

Fast Wood Screw Big Dog A4 6x80 mm with wide washer head and cutting tip delivers strong and split-free tightening in heavy timber constructions.

Big Dog Wood Screw Acid-Resistant Stainless Steel A4 6x80mm T30 50pcs Fast 281607

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Big Dog Wood Screw Acid-Resistant Stainless Steel A4 6x80mm T30 50pcs Fast 281607

Fast Wood Screw Big Dog A4 6x80 mm with wide washer head and cutting tip delivers strong and split-free tightening in heavy timber constructions.

Description

Building stable timber structures in harsh weather conditions requires fasteners with uncompromising strength. The Fast Big Dog wood screw (A4, 6x80mm) represents an efficient evolution of the classic lag screw. It simplifies installation by eliminating the need for separate washers, while providing exceptional tensile strength and load-bearing capacity for all types of structural timber joints.

Wide washer head for maximum contact area

A key feature of this screw is its integrated, wide washer head, which distributes the clamping force over a large surface area. This effectively prevents the screw head from sinking too deeply or splitting the wood surface when tightened firmly. The increased resistance to pull-through creates a reliable, long-lasting, and tight connection between timber components—a feature especially valuable when the structure is subjected to wind loads, temperature fluctuations, and moisture-related movement.

Acid-resistant A4 steel (corrosion class C5)

Manufactured from acid-resistant A4-grade stainless steel, this screw meets the requirements for corrosion class C5, representing the highest level of resistance to rust. This metallurgical composition makes the fastener ideal for installations near saltwater, swimming pools, and docks, as well as in environments with high humidity or exposure to chemicals. These properties ensure that load-bearing capacity remains intact year after year, with no risk of material degradation.

Fiber-cutting tip for smooth installation

The integrated cutting tip is designed to slice through wood fibers during rotation, significantly reducing internal stress within the timber. This minimizes the risk of splitting, even when installing near the ends or edges of boards. The precision-engineered tip also reduces the torque required for driving, which helps preserve battery-powered tools and reduces strain on the user during extensive installation work. Pre-drilling is generally not required for soft or medium-hard wood species.

Partial threading for a tight, flush connection

With a total length of 80 mm and a 48 mm threaded section, the partially threaded shank pulls the outer timber component firmly against the underlying substrate. As the threads engage with the inner timber member while the smooth shank rotates freely within the outer piece, all play is eliminated, resulting in a completely rigid connection.

TX recess for slip-free driving

Installation is performed using a TX30 bit—a proven drive system that ensures excellent contact between the tool and the fastener. The deep engagement prevents cam-out, allowing for a controlled, straight drive throughout the entire installation process without damaging the fastener.

Suitable applications

  • Framing and load-bearing structures for floor joists or roof trusses
  • Framework and support beams for timber decks, verandas, and patios
  • Construction in marine environments, near-shore locations, and for piers/docks
  • Exterior structures around hot tubs and swimming pools
  • Outdoor timber projects where high clamping force and a flush finish are required

Technical specifications

  • Product: Fast Big Dog A4 Timber Screw
  • Dimensions: 6x80 mm
  • Outer diameter: 6 mm
  • Total length: 80 mm
  • Thread length: 48 mm
  • Thread type: Partially threaded
  • Head type: Integrated large washer head
  • Point type: Cutting (cutter) point
  • Drive recess: TX30
  • Material: Acid-proof stainless steel (A4)
  • Corrosivity class: C5
  • Certification: CE-marked according to EN 14592
  • Quantity per package: 50 pieces

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