ISO 9156:1998
Aerospace - Nuts, anchor, self-locking, fixed, 90° corner, reduced series, with counterbore, with MJ threads, classifications: 1100 MPa (at ambient temperature)/235 °C, 1100 MPa (at ambient temperature)/315 °C and 1100 MPa (at ambient temperature)/425 °C

Standard No.

ISO 9156:1998

Release Date

1998

Published By

International Organization for Standardization (ISO)

Latest

ISO 9156:1998

Scope

This International Standard specifies the dimensions of self-locking, fixed, 90°corner anchor nuts, reduced series, with counterbore, with MJ threads, of classifications: 1 100 MPa /235 ℃, 1 100 MPa /315 ℃ and 1 100MPa/425℃. 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 9156:1998 history

• 1998 ISO 9156:1998 Aerospace - Nuts, anchor, self-locking, fixed, 90° corner, reduced series, with counterbore, with MJ threads, classifications: 1100 MPa (at ambient temperature)/235 °C, 1100 MPa (at ambient temperature)/315 °C and 1100 MPa (at ambient temperature)/425 °C
• 1989 ISO 9156:1989 Aerospace; nuts, anchor, self-locking, fixed, 90 corner, reduced series, with counterbore, with MJ threads, coated or uncoated, classification 1100 MPa/235 C, 1100 MPa/315 C or 1100 MPa/425 C; dimensions