840 Pcs M2 M2.5 M3 Screws Set, Nuts and Bolts Assortment, Hex Socket Button Head

--Premium Materials: bolts and nuts sets are made of high-quality stainless steel/carbon steel, featuring high hardness and torque, superior stability and density, resistance to breakage and deformation, corrosion resistance, rust prevention, and durability.\n--Round Head Screws and Nuts: The round head hexagonal socket screw design provides a large clamping area, resulting in a larger contact area during connection and higher reliability. The threads are uniform and smooth with a clear texture, ensuring balanced use, good tightening effect, and preventing slippage.\n--Equipped with Nut Set: Includes nuts to reduce friction and prevent leakage, protect parts from damage, and help maintain clamping force. Suitable for assembly, repair, and DIY work in offices, factories, homes, and workshops.\n--Multi-Scenario Applications: Widely used in machinery, communication equipment, electromechanical equipment, marine equipment, home appliances, mechanical engineering, automobiles, motorcycles.