BS EN 3431:2008 Aerospace series - Nuts, hexagonal, self-locking, with counterbore and captive washer, in heat resisting steel, silver plated - Classification: 1100 MPa (at ambient temperature)/425 °C
2008BS EN 3431:2008 Aerospace series - Nuts, hexagonal, self-locking, with counterbore and captive washer, in heat resisting steel, silver plated - Classification: 1100 MPa (at ambient temperature)/425 °C
2008BS EN 3431:2007 Aerospace series - Nuts, hexagonal, self-locking, with counterbore and captive washer, in heat resisting steel, silver plated - Classification: 1100 MPa (at ambient temperature)/425 °C