ISO 8940:1988

Aerospace — Nuts, anchor, self-locking, sealing, floating, two-lug, with counterbore, classifications 900 MPa/120 degrees C, 900 MPa/175 degrees C and 900 MPa/235 degrees C — Dimensions

Establishes these values for nuts, with a self-locking feature achieved by forming the upper portion of the nut element out-of-round, having these classifications and into which a sealing ring is incorporated to stop leakage past the threads. Is intended solely for the drawing up of complete product standards.