1. Button head screws, washers and nuts, classification kit, metric thread M2 M3 M4 M5, bolt lengths between 8 mm and 20 mm.
2. The material is 12.9 grade alloy steel, with clear, smooth and burreless threads. It is not easy to slide during rotation, with uniform force and good fastening strength. Corrosion-resistant, sturdy and durable, it is sufficient to meet various occasions. Suitable for DIY,3D printing projects, or replacing damaged and lost screws.
3. The four sizes of nuts and button head bolts, including M2 / M3 / M4 / M5, along with the matching flat washers and hex wrenches, are all neatly packed in a sturdy box, totaling 1,220 components.
4. It is widely applied in various small-scale maintenance work of precision machinery, classified instruments, electronic products, household appliances, communication products, 3D printers, computers, electronic products, etc.
5. Portable packaging: All metric screws are packed in a transparent box, with clear label paper attached to the outer cover. They are arranged by size, allowing you to easily store and find the size you need.
