461-Piece M3 Black Hex Socket Screw Assortment Kit – Ultimate Metric Fastener Set for Professionals & DIY Enthusiasts! Perfect for furniture assembly, electronics repair, machinery maintenance, and more, this M3 screw kit delivers 461 premium-grade fasteners to tackle any project. The set includes M3 bolts in versatile lengths (30mm, 35mm, 40mm, 45mm, 50mm), paired with black nuts and bolts, washers, and hex keys for effortless compatibility. Crafted for durability, the black bolts and nuts kit features grade hex socket head cap screws bolts in sleek black and silver finishes, ensuring reliability for industrial or hobbyist use. Highlights: Fully threaded M3 screws: Choose from M3x30mm screws, M3x45mm silver hex socket head cap screws bolts, M3 30mm and 50mm barrel nut options for precision fastening. Dual finishes: Match your project’s aesthetics with silver hex socket head cap screws bolts (e.g., M3x30mm silver hex socket head cap screws bolts and M3 x 50mm silver hex socket head cap screws bolts) and stealthy black variants. Specialized components: Includes hex socket screw M3*14mm, socket head cap screws, and corrosion-resistant M3 hex screws for tight spaces and heavy-duty applications. Ideal for engineers, makers, or homeowners, this M3 bolt kit combines organization and value with labeled compartments and professional-grade materials. Whether repairing electronics, assembling machinery, or crafting custom furniture, trust the M3 bolt assortment to deliver strength, versatility, and a polished finish. Kit Includes: M3 screws & bolts (30/35/40/45/50mm) Black/silver M3 hex screws and socket head cap screws Nuts, washers, hex keys, 50mm barrel nut Brass wire brush for maintenance Upgrade your toolbox – this black bolts and nuts kit is your all-in-one solution for metric fastening needs. 【M3 Long Screws Kit】461pcs M3 x 30mm /35mm /40mm /45mm /50mm hex socket head cap screws with matching hex nuts, lock washers and flat washers, total 5 sizes, different sizes can meet your different needs. 【Material】M3 black hex socket head screws nuts washers kit are made of high quality 12.9 grade alloy steel, which have high strength, not easy to deform, high hardness, no deformation, anti-oxidation, wear resistance, corrosion resistance, which can ensure long time using. 【Black Galvanizing Technology】This M3 screw kit features black galvanizing technology: its surface is oil-free (no organic oil) and odorless, with a smooth, burr-free finish, tight threads, and reliable hardness. 【M3 Screw Assortment Kit Functions】M3 black hex socket head cap screws are commonly used in machinery, it mainly has the advantages of easy fastening, disassembly, and not easy to slip corners. The head of hex socket cap screw is round, and the middle is a recessed hexagon. It is usually used with a hex wrench. 【Wide Applications】Widely used in all kinds of precision machinery industry, classified instruments, instruments, electronic products, printed projects, household appliances, communication products, locks, lamps, lights, toys, etc.