ISO 12278:1999
Aerospace - Nuts, barrel, self-locking, floating, self-aligning, with MJ threads, classifications: 900 MPa (at ambient temperature)/235 °C, 1100 MPa (at ambient temperature)/235 °C, 1250 MPa (at ambient temperature)/235 °C and 1550 MPa (at ambient tempera

Standard No.

ISO 12278:1999

Release Date

1999

Published By

International Organization for Standardization (ISO)

Latest

ISO 12278:1999

Scope

This International Standard specifies the dimensions of self-locking, floating, self-aligning barrel nuts, with MJ threads, for classifications: 900 MPa/235 ℃ 1 100 MPa/235 ℃, 1 250 MPa/235 ℃ and 1 550 MPa/235 ℃. 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 surface treatment.

ISO 12278:1999 history

• 1999 ISO 12278:1999 Aerospace - Nuts, barrel, self-locking, floating, self-aligning, with MJ threads, classifications: 900 MPa (at ambient temperature)/235 °C, 1100 MPa (at ambient temperature)/235 °C, 1250 MPa (at ambient temperature)/235 °C and 1550 MPa (at ambient tempera