About this item 【100-Piece M3 x40 Long Screws】This comprehensive M3 screw kit includes 100 Pcs M3 x 40mm metric machine screws. With diverse sizes quantities, it meets all your daily 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 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. Overview Size: M3x40mm-100pcs Color: M3x40-100Pcs Material: Carbon Steel Brand: AvrestYPT Item dimensions L x W x H: 0.11 x 0.11 x 1 inches
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