Standard

BS ISO 12273:2010

Aerospace. Nuts, anchor, self-locking, floating, self-aligning, two lug, with MJ threads, classifications: 900 MPa (at ambient temperature)/235 °C, 900 MPa (at ambient temperature)/ 315 °C and 900 MPa (at ambient temperature)/425 °C. Dimensions

Current

•

Published:

31 Oct 2010

1 Scope

This International Standard specifies the dimensions of floating, self-aligning, two lug anchor nuts, with MJ threads and a self-locking feature achieved by forming the upper portion out-of-round, of the following classifications:

— 900 MPa/235 °C;
— 900 MPa/315 °C;
— 900 MPa/425 °C.

NOTE 1 The first element in the classifications (900 MPa) corresponds to the minimum tensile stress that the nut is able to withstand at ambient temperature without breaking or cracking when tested with a bolt of a higher strength class.

NOTE 2 The second element in the classifications is the 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.

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

Product Details

Descriptors

Diameter

Threaded fasteners

Anchor nuts

Temperature

Tensile strength

Roughness (surface)

Dimensions

Threads

MJ threads

Locknuts

Nuts

Fasteners

Angles (geometry)

Aircraft components

ICS Codes

49.030.30 Nuts

Committee

ACE/12

International relationships

Identical to:

ISO 12273:2010

ISBN

978 0 580 70097 2

Publisher

BSI