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    Flange Nut – 1/4″-20 – Black Oxide – Serrated Hardened Steel

    Part #: HNCFLBLK-1/4

    Hardened serrated flange nut with 1/4″-20 UNC threads for secure, vibration-resistant fastening. Black oxide finish provides mild corrosion resistance and a clean appearance, ideal for automotive, machinery, and structural applications requiring reliable torque locking.