Fasteners are hardware devices such as nails, screws, bolts, and anchors used to join or secure construction materials together.

Fasteners are mechanical devices used to join, attach, or secure two or more construction materials together. They play a fundamental role in virtually every phase of construction, from structural framing to finish work and equipment installation.

In construction, common fasteners include nails, screws, bolts, washers, anchors, and specialty connectors. Fasteners are manufactured in a wide range of sizes, materials, coatings, and load ratings to suit specific applications. Selection depends on factors such as material type, load requirements, environmental exposure, and building code compliance.

Proper fastener selection and installation are critical for structural integrity, durability, and safety. Using the wrong fastener can lead to corrosion, loosening, or failure over time. Building codes and manufacturer specifications often dictate acceptable fasteners for structural, exterior, and life-safety-related applications.

Modern construction fasteners are often engineered for specific applications—some screws are designed to replace nails entirely in structural framing.