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Flange Nut – 3/8″-16 – Black Oxide – Serrated Hardened Steel

Part #: HNCFLBLK-3/8

Hardened serrated flange nut with 3/8″-16 UNC threads for secure fastening and vibration resistance. Black oxide finish provides mild corrosion protection and a clean appearance. Ideal for automotive, machinery, structural steel, and industrial applications requiring torque-lock performance.