CSK HEAD SELF TAPPING SCREW (Price per 1box) - Xian Yik Hardware

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A CSK (Countersunk) Head Self-Tapping Screw is a specialized fastener designed to sit flush with or below the surface of the material it is driven into. These are the workhorses of the cabinetry, DIY, and metalworking worlds.

What Makes Them Unique?

The Head Shape: The "CSK" stands for Countersunk. The head is shaped like a cone (usually with an 80° to 90° angle), allowing it to sink into the material.
Self-Tapping Threads: Unlike a machine screw that requires a pre-threaded hole (like a nut), these screws cut their own threads as they are driven into softer materials like plastic, wood, or thin-gauge metal.

Anatomy & Specifications

Feature	Description
Drive Types	Phillips (+), Pozi, Torx (Star), or Slotted.
Point Type	Usually a sharp "Gimlet" point for piercing or a blunt "Type B" for heavier metals.
Material	Stainless Steel (304/316), Zinc Plated Carbon Steel, or Black Phosphate.
Common Uses	Hinges, brackets, drywall, and sheet metal assembly.

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