This standard specifies characteristics for one lug, reduced series, counterbored, fixed anchor nuts, with a self-locking feature achieved by forming the upper portion out-of-round, in steel, cadmium plated, MoS2 lubricated, classification 1100 MPa 1) / 235 ℃. 2)
EN 3712:2007 history
2007EN 3712:2007 Aerospace series - Nuts, anchor, self-locking, one lug, fixed, reduced series, with counterbore, in steel, cadmium plated, MoS2 lubricated - Classification: 1100 MPa (at ambient temperature) / 235 °C