BS ISO 9609:2016
Current
The latest, up-to-date edition.
Aerospace. Nuts, hexagonal, plain, reduced height, normal across f lats, with MJ threads, classifications: 450 MPa (at ambient temperature) /120 °C, 450 MPa (at ambient temperature) /235 °C, 600 MPa (at ambi ent temperature) /425 °C, 900 MPa (at ambient temperature) /235 °C, 900 MPa (at ambient temperature) /315 °C, 900 MPa (at ambient tempera ture) /650 °C,|*
Hardcopy , PDF
English
31-03-2016
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Foreword
Introduction
1 Scope
2 Normative references
3 Configuration and dimensions
Defines the dimensions of plain, hexagonal nuts, reduced height, normal across flats, with MJ threads, of classifications: 450 MPa/120 degrees C, 450 MPa/235 degrees C, 600 MPa/425 degrees C, 900 MPa/235 degrees C, 900 MPa/315 degrees C, 900 MPa/650 degrees C, 1100 MPa/235 degrees C, 1100 MPa/730 degrees C, and 1250 MPa/600 degrees C.
| Committee |
ACE/12
|
| DevelopmentNote |
Supersedes BS A314(1997). (03/2016)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard specifies the dimensions of plain, hexagonal nuts, reduced height, normal across flats, with MJ threads, of classifications: 450 MPa/120 °C, 450 MPa/235 °C, 600 MPa/425 °C, 900 MPa/235 °C, 900 MPa/315 °C, 900 MPa/650 °C, 1 100 MPa/235 °C, 1 100 MPa/730 °C, and 1 250 MPa/600 °C.
NOTE 1 450 MPa, 600 MPa, 900 MPa, 1 100 MPa and 1 250 MPa 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.
NOTE 2 120 °C, 235 °C, 425 °C, 315 °C, 650 °C, 730 °C and 600 °C corresponds to 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 surface treatment.
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.
| Standards | Relationship |
| ISO 9609:2016 | Identical |
| ISO 8788:2000 | Aerospace Nuts, metric Tolerances of form and position |
| ISO 5855-2:1999 | Aerospace MJ threads Part 2: Limit dimensions for bolts and nuts |
| ISO 245:1998 | Aerospace — Lockwire — Diameters |
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