csavartípus

A csavartípus (screw type) refers to the specific design and characteristics of a screw, which determine its application, mechanical properties, and compatibility with other components. Screws are fasteners used to join materials together by converting rotational motion into linear motion, creating a clamping force. The type of screw is classified based on factors such as thread profile, head shape, drive type, material, and intended use.

Common thread profiles include the metric ISO standard (e.g., M3, M6), Unified National (UN) or Unified National Coarse (UNC) threads used in the United States, and British Standard Whitworth (BSW) threads. The thread pitch, measured in millimeters or threads per inch, influences the screw’s gripping strength and suitability for specific materials. Fine-pitch threads provide better holding power in softer materials, while coarse threads are better for high-strength applications.

Screw heads vary widely, including flat, Phillips, Torx, hex, and slotted designs, each suited for different tools and torque requirements. The drive type—such as Phillips (#1, #2), Torx (T10, T25), or hex—affects ease of installation and resistance to cam-out, where the tool slips from the drive. Specialized screws, like self-tapping or sheet-metal screws, are designed to create their own threads in soft materials, eliminating the need for pre-drilled holes.

Material composition, typically steel, stainless steel, brass, or plastic, determines corrosion resistance, strength, and durability. Coatings such as zinc, nickel, or epoxy further enhance protection against environmental factors. The choice of screw type depends on the application’s load-bearing requirements, material compatibility, and installation conditions. Proper selection ensures secure, long-lasting assemblies in construction, automotive, electronics, and manufacturing industries.