BS A 318:1997

This standard BS A 318:1997 Nuts, hexagonal, slotted (castellated), reduced height, reduced across flats, with MJ threads, classifications. 450 MPa (at ambient temperature)/425°C, 600 MPa (at ambient temperature)/235°C, 600 MPa (at ambient temperature)/315°C, 600 MPa (at ambient temperature)/650°C, 900 MPa (at ambient temperature)/235°C, 900 MPa (at ambient temperature)/730°C and 1100 MPa (at ambient temperature)/600°C. Dimensions is classified in these ICS categories:

• 49.030.30 Nuts

This International Standard specifies the dimensions of hexagon slotted (castellated) nuts, reduced height, reduced across flats, with MJ threads, of classifications: 450 MPa ¹)/425 °C ²), 600 MPa ¹)/235 °C ²), 600 MPa ¹)/315 °C ²), 600 MPa ¹)/650 °C ²), 900 MPa ¹)/235 °C ²), 900 MPa ¹)/730 °C ²) and 1 100 MPa ¹)/600 °C ²).

These nuts are intended to be used with split pins in conformity with ISO 1234.

This International Standard is only applicable for the compilation of aerospace product standards.