481PCS M3 Hex Socket Screw Assortment Kit, M3 x 30/35/40/45/50mm

481PCS M3 Hex Socket Screw Assortment Kit, M3 x 30/35/40/45/50mm

• 1. GRADE 12.9 HIGH TENSILE STRENGTH: Crafted from premium 12.9 grade alloy steel, these M3 bolts offer superior tensile strength and durability. The black oxide finish provides enhanced corrosion resistance, making them ideal for high-stress applications where reliability is non-negotiable, surpassing standard stainless steel or 8.8 grade bolts.
• 2. SPECIALIZED LONG M3 SIZES ASSORTMENT: Specifically curated for projects requiring extra reach. Includes M3 x 30mm, 35mm, 40mm, 45mm, and 50mm lengths. Perfect for deep-hole fastening in 3D printer frames, robotics, and industrial machinery assembly where standard short-screw kits fall short.
• 3. COMPLETE 4-IN-1 FASTENER SOLUTION: This 481pcs kit provides a professional-grade assembly experience. Each screw set is paired with matching hex nuts, flat washers, and spring washers. The inclusion of spring washers ensures exceptional vibration resistance, preventing loosening in high-speed RC cars or drone motors.
• 4. WIDE APPLICATION & RUFUS-READY SPECS: Engineered for precision. The internal hex socket drive prevents stripping and allows for higher torque. Highly recommended for FPV drone building, RC vehicle maintenance, PC water cooling setups, and DIY mechanical repairs that demand professional-grade metric hardware.
• 5. ORGANIZED STORAGE WITH INSTALLATION TOOL: Housed in a durable, partitioned case with a clear size label for quick identification. We’ve also included a dedicated Allen wrench, so you have everything needed for installation right out of the box. Organized, efficient, and ready for your workbench.