Product Details：Screws Type: Hex Flat Head ScrewMaterial: Carbon Steel Finished: Black OxideSize: M3 x 20m /25mm /30mm /35mm /40mmScrew Groove Type: Inner HexPackage Quantity: 100 PiecesMaterial - Constructed from premium-grade carbon steel black oxide finish, known for its superior corrosion resistance properties, this hardware ensures exceptional durability and longevity compared to other options available in the market.Feature - The flat head machine screws are very strong and are great for both indoor and outdoor use. This stainless is superior to regular steel and provides excellent rust resistance.Application - Suitable for a wide range of industries and purposes including wind power, aerospace, office equipment, electronics, communications, shipbuilding, machinery, and more.
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