1080Pcs Screws Bolts And Nuts And Washers Assortment Set, Metric M4, 1080 Black What are the advantages of our machine screw assortment kit? Superb Material: All hex socket head bolts and nuts kit are made of high-quality carbon steel material, corrosion-resistant, rust-proof, not easy to break, still maintain high strength and excellent performance in harsh environments, and durable. Hex Socket Head Cap Screws Bolts: Assorted bolts nuts and washers kit threads are clear and firm, smooth and burr-free, easy to insert and not easy to loosen. The perfect fit of nut and washer expands the contact surface, reduces stress, and protects screws and parts. Easy to Store: All stainless steel bolts and nuts kit are stored in a transparent and sturdy storage box with compartments, stored separately, well organized, easy to carry and find. No mess during transport and easy to use. Widely Used: Suitable for precision machinery, classification instruments, electronic products, meters, household appliances, communication products, furniture, locks, lamps, toys, bicycles, furniture, license plates, automobiles and other fields. Package Includes: You will receive 1080 pcs hex socket head bolts and nuts and washers, size including: m2x20mm, m2x16mm, m2x12mm, m2x8mm, m2x6mm, m2x6mm, m2 washers, m2 nuts, m3x30mm, m3x20mm, m3x16mm, m3x12mm, m3 x8mm, m3x4mm , m3 washers, m3 nuts, m4x30mm, m4x20mm, m4x18mm, m4x14mm, m4x10mm, m4x6mm, m4 washers, m4 nuts, rich in quantity and size to meet the needs of daily use.