BS A 314:1997
Aerospace - Nuts, hexagonal, plain, 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 (at ambient tempe

Standard No.

BS A 314:1997

Release Date

1997

Published By

British Standards Institution (BSI)

Status

Be replaced 2016-03

Replace By

BS ISO 9609:2016

BS A 314:1997(2011)

Latest

BS ISO 9609:2016

BS A 314:1997(2011)

Replace

88/77414 DC-1988

Scope

This International Standard specifies the dimensions of plain, hexagonal nuts, reduced height, normal across flats, with MJ threads, of classifications: 450 MPa/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℃. Nuts provided with holes are intended to be used with lockwire in conformity with ISO 245. This International Standard is only 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.

BS A 314:1997 history

• 2016 BS ISO 9609:2016 Aerospace - Nuts, hexagonal, plain, 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 degrees C, 9
• 1997 BS A 314:1997 Aerospace - Nuts, hexagonal, plain, 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 (at ambient tempe