About this item Exquisite Material: These m4 nuts and bolts are made of high-quality 304 stainless steel, with high hardness and high torque and superior stability, not easy to break or deform, corrosion-resistant, rust-resistant, sturdy and durable. Hex Socket Head Cap Screws Bolts Nuts Washers Set: Hex socket head design, easy to tighten and can withstand greater loads. The threads are clear and firm, smooth and burr-free, easy to insert and not easy to loosen, and have strong fixing ability. Equipped with Nuts and Washers: Hex nuts can make installation more precise and tightening effects better; Flat and lock washers can increase the contact area, reduce stress and protect parts and screws, providing strong holding force and maximum clamping force. Multi-scenario Application: Suitable for precision instruments, engineering fields, assembled automobiles, product manufacturing, furniture, home furnishings, office equipment, construction, automobiles, bicycles, 3D printing projects, communication equipment, ship assembly and other fields. Package Includes: 321 pcs in total, include: m4x30- 16pcs, m4x35 - 16pcs, m4x40 - 16pcs, m4x45 - 16pcs, m4x50 - 16pcs, m4 nuts - 80pcs, m4 flat washers - 80pcs, m4 lock washers - 80pcs, m4 wrench - 1pcs, to meet the needs of different fields. Overview Material: Carbon Steel Head Style: Socket Item dimensions L x W x H: 4 x 3 x 0.7 inches Exterior Finish: Plain Thread Size: M4
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