461Pcs M3 Socket Head Screws Metric Screws Bolts Washers Nuts Kit

M3 Long Screws Kit461pcs 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. | MaterialM3 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 TechnologyThis 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 FunctionsM3 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 ApplicationsWidely used in all kinds of precision machinery industry, classified instruments, instruments, electronic products, printed projects, household appliances, communication products, locks, lamps, lights, toys, etc.