BS A 315:1997 PDF

Scope: This International Standard specifies the dimensions of hexagon slotted (castellated) nuts, reduced height, normal across flats, with MJ threads, of classifications: 450MPa/120℃, 450 MPa/235℃, 600 MPa/425 ℃, 900 MPa/235 ℃, 900 MPa/315℃, 900 MPa/650℃, 1 100 MPa/235 ℃, 1 100 MPa/730 ℃, and 1 250MPa/600℃. These nuts are intended to be used with split pins in conformity with ISO 1234. This International Standard is applicable for the compilation of aerospace product standards. note:1) Corresponds to the minimum tensile stress which the nut is able to withstand at ambient temperature without breaking or cracking when tested with a bolt of a higher strength class. 2) Maximum temperature that the nut is able to withstand, without permanent alteration to its original characteristics, after ambient temperature has been restored. The maximum temperature is conditioned by the material or by the surface treatment. 3) To be published. (Revision of ISO 1234:1976)

BS A 315:1997 history

2016 BS ISO 9618:2016 Aerospace - Nuts, hexagonal, slotted (castellated), reduced height, normal across flats, with MJ threads, classifications: 450 MPa (at ambient temperature)/120 degrees C, 450 MPa (at ambient temperature)/235 degrees C, 600 MPa (at ambient temperature)/425
1997 BS A 315:1997 Aerospace - Nuts, hexagonal, slotted (castellated), reduced height, normal across flats, with MJ threads, classifications: 450 MPa (at ambient temperature)/120 °C, 450 MPa (at ambient temperature)/235 °C, 600 MPa (at ambient temperature)/425 °C, 900 MPa (