480PCS M4 Socket Head Screws Assortment Kit,M4x6/8/12/16/20/30 mm

Key features

• Product details- This M4 screw assortment kit comes with a total of 480 pieces, including 120pcs M4 hex socket head bolts, 120pcs hex nuts, 120pcs flat washers, 120pcs spring washers, and 1 mini wrench. This complete M4 screw set is ideal for 3D printers, electronics, RC models, DIY repairs, and CNC machinery.
• Standardized Metric Sizes -The M4 hex bolts assorted kit come with 7 commonly used lengths—M4-0.7 x 6mm, 8mm, 12mm, 16mm,20mm,25mm,30mm—ideal for routine installations and repairs. They meet standard metric specs, the average error is less than 0.01mm.
• High quality– Made of durable 12.9 alloy steel 4mm socket head cap screws and nuts set with oil-free black galvanizing for corrosion resistance. Smooth, burr-free surface with precise threading ensures secure fastening. Weatherproof design maintains hardness and durability for long-term all-weather use. Perfect for demanding applications requiring strength and reliability.
• Wide ApplicationsThis M4 hex socket head bolts assortment is perfect for all sorts of building and repair projects. Whether you’re into 3D printing, working on RC cars, fixing small electronics, or tackling DIY jobs—these screws have you covered.
• Organized Storage Box - The metric machine screws kit comes in a durable, compartmentalized case with clear size labels—so you can spot the right screw instantly. Keeps your workspace tidy and speeds up project progress, making every job smoother.

Free shipping included. 30-day hassle-free returns.