12.9 Alloy Steel M2 M3 M4 M5 Metric Screw Assortment Kit, Black Hex Socket Cap Screws Nuts Washers Set for 3D Printing DIY

🔴 【Complete Metric Hardware Kit】

Includes M2, M3, M4, and M5 screws in multiple lengths, paired with matching nuts, flat washers, and lock washers. A 2020‑piece full assortment designed for assembly, repair, and DIY applications.

🟠 【Durable Carbon Steel Construction】

Made from high‑quality carbon steel for superior strength and wear resistance. The corrosion‑resistant finish ensures long‑lasting performance across electronics, machinery, and daily repair tasks.

🟡 【Precision Threading for Smooth Installation】

accurate threading provides reliable engagement and reduces stripping. Combined with flat and lock washers, the set delivers stable fastening and enhanced anti‑loosening performance.

🟢 【Organized Storage Box for Easy Access】

Each size and length is clearly labeled and separated in a compartmentalized organizer box. Quickly locate the exact part you need without sorting through mixed hardware.

🔵 【Versatile for Electronics and DIY Projects】

Ideal for computer builds, 3D printers, drones, RC models, small machinery, and general household repairs. A practical all‑in‑one assortment for makers, technicians, and hobbyists.