This ISO 8673 hex nut MF is made from plain steel—uncoated and untreated—offering excellent strength, though on its own it provides minimal corrosion resistance. It features a metric fine thread with a left-hand (LH) thread direction, commonly used on components that rotate clockwise to prevent loosening. Standardized to DIN 934 and ISO 8673, this nut carries a strength class of 6, making it well-suited for pairing with bolts and screws rated at property class 6.8 or lower.