M3/M4/M5/M6 Carbon Steel Nickel Plated Cross Cave Outer Hexagon Combination Screw Three Combination Screw Combination Bolt for Industrial & Construction Use

Material & Finish: Crafted from high-quality carbon steel with a nickel-plated coating, these combination screws offer superior corrosion resistance, rust protection, and a smooth, professional surface—ensuring durability for long-term use in indoor, outdoor, and industrial environments.
3-in-1 Combination Design: Integrated 3-piece structure (screw + washer + nut) eliminates the need for separate hardware, saving installation time and ensuring a secure, hassle-free fit for all fastening tasks.
Design & Function: Features a cross recess (cross cave) and outer hexagon head—compatible with standard cross-head tools for easy installation, while the outer hex shape provides extra torque to prevent slipping and ensure firm tightening.
Specifications: Available in M3, M4, M5, and M6 sizes with precise threads, delivering stable fixation and strong load-bearing capacity that won’t loosen under frequent use or heavy loads.
Application Scenarios: Widely used for furniture assembly, cabinet making, machinery installation, home appliance repair, electrical equipment fastening, DIY projects, and light industrial applications—suitable for wood, metal, and plastic materials.
Core Advantages: All-in-one design for efficiency; nickel plating for durability and corrosion resistance; multi-size options for versatile use; cross hex head for easy operation (ideal for both professionals and DIY enthusiasts).

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