Extensive 439 Piece Metric Bolt and Nut Kit With M3 M4 M5 Screws Lock and Flat Washers Pro Grade 10.9 Alloy Steel Hex Socket Button Head Silver Finish Ideal for Hardware Projects 3D Printing and DIY Repairs

Premium Metric Bolt & Nut Kit: M3-M5, 439Pcs, 12.9 Alloy
✔️ 439-piece metric kit with M3-M5, bolts, nuts, washers

This comprehensive metric hardware kit includes 218 bolts and 218 nuts in M3, M4, and M5 sizes, plus lock and flat washers. Crafted from premium 12.9 alloy steel, it resists corrosion and wear, making it ideal for 3D printer assemblies, robotics projects, and DIY repairs.

✅ 218 bolts: M5 8×10, 12×10, 16×10, 20×9; M4 8×20, 12×20, 16×10, 20×10; M3 8×30, 12×30, 16×29, 20×30
✅ 218 nuts: M3×119, M4×60, M5×39
✅ Includes lock washers and flat washers for secure assemblies
✅ Tools: 3 wrenches included for quick setup
✅ Premium 12.9 alloy steel construction for corrosion resistance
✅ Ideal for 3D printing, robotics, and automotive projects

💡 What is a metric bolt and nut kit used for in DIY projects and 3D printing?

• handy for building enclosures, frames, and mounts in hobby projects
• ideal for 3D printer assemblies, robot arms, and small machinery repairs
• provides common M3, M4, M5 hardware for quick, secure fittings
• features corrosion-resistant 12.9 alloy steel for lasting use

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