2Pcs M16 Flange Hex Lock Nuts, Grade 10.9 Carbon Steel Black Oxide Finish for Mechanical Assembly and Equipment Fixing

• [Multiple Sizes Available] Three commonly used sizes: M10, M14, M16 flange hex lock nuts, covering the most frequently used specifications in industrial and mechanical fastening. Precision‑machined to meet standard dimensional requirements, ensuring seamless compatibility with matching bolts, screws, and threaded components.
• [Black Oxide Finish] The flange hex lock nuts undergo a professional black oxide treatment, forming a dense protective layer on the surface. Effectively resists rust, corrosion, oxidation, and wear, maintaining good condition even in humid, dusty, or chemically exposed environments.
• [Secure Anti‑Loosening] The integrated flange design eliminates the need for additional washers during installation, saving time and effort. The large contact area of the flange distributes fastening pressure evenly across the mating surface, reducing stress concentration and preventing damage to equipment or fittings. Anti‑slip serrations on the surface enhance friction between the nut and the mating surface.
• [Carbon Steel Material] Made of high‑quality 10.9‑grade carbon steel, offering excellent tensile strength, hardness, and impact resistance. Delivers stable performance, reliable fastening, and a long service life.
• [Practical Set] The package includes 2 heavy‑duty flange hex lock nuts, a practical quantity for routine maintenance, replacement, and spare needs. Suitable for mechanical assembly, equipment repair, pipe fitting installation, as well as DIY projects and home workshop applications requiring reliable heavy‑duty fastening.

M14 Flange Hex Lock Nuts