Enhance your fastening projects with this comprehensive set of 200 hex socket head set screws, crafted from premium 12.9 grade alloy steel for exceptional hardness, durability, and long-lasting performance. Designed for secure fastening without the need for nuts, these fully threaded set screws are ideal for fixing pulleys, gears, and other components firmly in place. The hex socket drive allows for easy and precise installation using a standard hex key, making these screws versatile and user-friendly for various mechanical and DIY applications. Key Features: · **High-Strength 12.9 Grade Alloy Steel:** Engineered for superior hardness and wear resistance, ensuring a reliable and durable fastening solution for demanding projects. · **Multipurpose Hex Socket Head Design:** Provides secure internal wrenching, allowing for simple and efficient driving with a hex key, minimizing the risk of stripping. · **Wide Size Assortment:** Includes 10 commonly used sizes ranging from M3x3mm to M8x8mm, covering a broad range of applications and eliminating the need to source multiple screw types. · **Large Quantity Pack:** With 200 pieces included, this set ensures you have an ample supply of screws on hand, reducing trips to the hardware store and supporting continuous workflow. · **Convenient Storage Box:** Comes in a transparent, resealable box that keeps screws organized, easy to identify, and portable for storage or transport. Specifications: · Material: 12.9 Grade Alloy Steel · Color: Black · Type: Hex Socket Cup Point · Sizes and Quantities: - 20pcs M3x3mm - 20pcs M3x4mm - 20pcs M3x6mm - 20pcs M4x4mm - 20pcs M4x6mm - 20pcs M5x5mm - 20pcs M5x8mm - 20pcs M6x6mm - 20pcs M6x10mm - 20pcs M8x8mm · Box Size: 13 x 6.5 x 2.3cm (5.11 x 2.56 x 0.9 inches) Package Includes: · 200pcs Hex Socket Head Set Screws This set screw kit is an essential addition to any toolbox, providing durable, high-quality fasteners for mechanical assemblies, repairs, and custom projects. Its wide size range and robust construction make it ideal for professionals and DIY enthusiasts seeking reliable fastening solutions.