10.9 Grade Carbon Steel Material: M4 bolts and nuts are made of high quality 10.9 grade carbon steel material, which is high in hardness, strong, thick, corrosion-resistant, scratch-resistant, not easy to rust or break, and has long-lasting durability and stability.
Round Head Hexagon Socket Bolts Assortment Set: M4 nuts and bolts adopt a round head hex socket design, and the head contact area is large, making it more balanced in force. The design makes tightening the m4 bolt set in tight areas effortless.
Practical Design: The threads of the hexagon socket bolts are uniform and smooth, with clear lines, balanced use, and good tightening effect. Equipped with an installation wrench. When tightening m4 screws, the wrench is not easy to slip out and the tightening effect is better.
Multi-scene Application: Suitable for assembly, repair, and DIY work in offices, factories, homes, and workshops. Widely used in the mechanical field, communication equipment, electromechanical equipment, ship equipment, household appliances, engineering machinery, automobiles, motorcycles and other parts fixing.
Package Includes: You will receive 520 pieces in total, sizes and quantities include: 45 pcs m4x6mm, 40 pcs m4x8mm, 35 pcs m4x10mm, 30 pcs m4x12mm, 20 pcs m4x16mm, 20 pcs m4x20mm, 15 pcs m4x25mm, 15 pcs m4x30mm, 20 pcs m4x35mm, 20 pcs m4x40mm, 260 pcs m4 nuts, 1 x m4 wrench, meeting the needs of multiple scenarios and fields.
Colour: Black 520 M4
Size: M4
Height: 1
Length: 7
Width: 4