| Standard | DIN 7972 |
| Surface Treatment | Nickle |
Product Introduction
Standard Name: Countersunk Head Tapping Screw, Nickel Plated.
Common Names: Nickel-Plated Countersunk Self-Tapping Screw, Nickel-Plated Flat-Head Self-Tapping Screw.
Product Definition: A self-tapping screw featuring a countersunk head and nickel-plated surface. It eliminates the need for pre-tapped holes, directly forming threads in softer materials. After installation, the head sits flush with the workpiece surface. Nickel plating provides excellent corrosion resistance, a bright silver-white decorative finish, and moderate wear resistance.
Self-Tapping Screw Flat Head Nickel Key Features
Flat Head Design: The head has a tapered flat top (typically 82° or 100° angle), flush with the surface
after installation, providing a smooth appearance and even pressure distribution.
Nickel Plated: Provides excellent corrosion resistance, abrasion resistance, and a bright silver finish,
enhancing conductivity and aesthetics, suitable for electronic or exposed environments.
Self-Tapping Thread: Sharp tip cuts through the material to form an internal thread, eliminating the
need for pre-tapping.
Drive Type: Commonly Phillips or slotted, for easy actuation.
Material and Specifications: Commonly carbon steel, various sizes (e.g., M1-M6), medium strength.
Working Principle
Self-Tapping Entry: The tip penetrates the material, cutting a matching internal thread.
Head Insertion: The flat head gradually sinks into the countersink, generating an axial clamping force.
Load Distribution: The tapered head evenly distributes pressure, preventing surface bulges; nickel
plating reduces friction and improves corrosion resistance.
Installation Control: Precise depth control using a screwdriver prevents over-tightening and material
damage; the principle involves material cutting and friction interlocking.
Product Applications
Electronics and Appliances: Secures panels, housings, or circuit boards; nickel plating enhances
conductivity and aesthetics.
Metalworking: Connects thin metal sheets or plastic components; easy self-tapping.
Automotive and Instrumentation: Interior trim or lightweight mounting; corrosion-resistant for
interior environments.
Furniture and Decor: Assembles metal fittings; a glossy finish enhances the overall look.
DIY and Repair: Thin-material connections in everyday projects; long-term reliability.
