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China, Chinese Window Screw and Door Screw Russia Csk Self Tapping Screw1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Fastener FittingSelf tapping ScrewsWindow ScrewDoor Screw
Shenzhen Dahe Industrial Co., Ltd.
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Product Description Product Introduction | Blue & White Zinc CSK Head Self-Tapping Screw (For Doors & Windows)Product Name:Blue & White Zinc Plated Pan Head Countersunk Self-Tapping Screws (Door & Window Screws)Also Available: Yellow Zinc FinishKey Features:Head Type: Combination of pan head with countersunk base, designed for flush surface installationUnderhead Design: Equipped with 4 serrated locking ribs under the head for anti-slip and anti-rotation effectThread Style: Full coarse thread, ideal for fastening into plastic, soft metal, aluminum, or wood framesSurface Finish: Available in blue-white zinc (standard) or yellow zinc (optional), both offering basic corrosion protectionPopular Region: Widely used and highly favored in Central Asian markets, including Uzbekistan, Kazakhstan, Turkmenistan, and others, especially in door and window frame assemblyProduct AdvantagesFeatureDescriptionCSK HeadCombines the aesthetic of pan head with flush mounting benefitsSerrated Ribs4 anti-slip teeth under the head improve holding power and prevent looseningCoarse Thread DesignProvides stronger grip in low-density materials such as aluminum and plasticsBule-White Zinc DesignOffers decent corrosion resistance with a clean, silver-like appearanceOptional Yellow Zinc Provides enhanced rust protection with a golden appearance for aesthetic contrastHow to UseRecommended Tools:Electric screwdriver, drill driver, or manual screwdriverUse Phillips or Pozi drive bits depending on the screw type (most often Phillips)Installation Steps:Positioning: Place the screw tip against the material (usually aluminum or PVC frames)Drilling: Begin driving the screw with steady pressure. The self-tapping tip will pierce and cut into the substrateThreading: The coarse thread forms its own path in the material, ensuring a tight gripLocking: As the head nears the surface, the 4 serrated ribs bite into the material to prevent head rotation and enhance holding strengthFlush Finish: The countersunk design under the pan head allows the screw to sit flush or slightly recessed into the material for a clean lookCommon Applications:Aluminum window and door frame installationFixing hardware onto plastic profilesAssembling PVC and light steel frame structuresCurtain wall or decorative metal frame attachmentSurface Finish OptionsCoating TypeAppearanceCorrosion ResistanceRecommended UseBlue-White ZincSilvery-BlueStandard (24-72h NSS)Indoor or mild outdoor applicationsYellow ZincGolden-YellowBetter than blue zincSlightly more corrosive or aesthetic-sensitive areas
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