Anchor Screw Stainless Steel A4, 4.8x40mm 250pcs, Fast 285358

Description

Secure your heavy-duty structural connectors in the most extreme conditions with the FAST Building Bracket Screw Stainless Steel A4 (4.8x40mm). This premium-grade, acid-proof connector screw (also known as an anchor screw) is engineered specifically for the permanent and unyielding fastening of structural hardware—such as joist hangers, angle brackets, and perforated strapping—onto timber substrates. Thanks to its high-alloy composition, this screw delivers compromise-free protection against rust and mechanical failure over time.

Ultimate C5 Corrosivity Protection for Aggressive Environments

Manufactured from top-tier, marine-grade acid-proof A4 stainless steel, this screw is rated under the highest C5 corrosivity category. This exceptional standard makes it the definitive choice for structural installations in heavily aggressive and demanding environments, including:

• Marine & Coastal Applications: Ideal for docks, piers, and beachfront builds where saltwater spray and high humidity rapidly degrade standard fasteners.
• Exotic Hardwoods & Premium Timber: Highly resistant to the natural, aggressive tannic acids found in oak, cedar, larch, and tropical hardwoods.
• Chemically Treated Wood: Prevents galvanic corrosion when driven into heavy-duty pressure-treated or ACQ-treated lumber.

Engineered for Precision and Maximum Pull-Out Resistance

The FAST bracket screw is specifically contoured to establish a flush, tightly locked joint between the steel hardware and the wood. The reinforced cylindrical neck beneath the head is designed to center perfectly inside the pre-punched holes of standard building brackets, eliminating play and distributing load stress evenly. Furthermore, its sharp tip and sharp thread profile bite instantly into the wood fibers, minimizing splitting while maximizing immediate withdrawal resistance.

Technical Specifications

• Brand: FAST (Velltra.com)
• Article Number (SKU): 285358
• Product Type: Connector screw / Bracket screw for exterior use
• Dimensions: 4.8x40 mm
• Length: 40 mm
• Diameter: 4.8 mm
• Material: Stainless Steel A4 (Acid-proof, marine-grade)
• Corrosivity Category: C5 (Maximum industrial rating for coastal and chemical environments)
• Application: Fastening structural steel brackets to pressure-treated lumber, hardwoods, and marine structures
• Quantity per Package: 250 pcs (Box)