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BS A 321:1997 Aerospace — Nuts, anchor, self-locking, floating, self-aligning, single 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

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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 classifications: 900 MPa (at ambient temperature)/235 °C, 900 MPa (at ambient temperature)/315 °C and 900 MPa (at ambient temperature)/425 °C. This International Standard is only applicable for the compilation of aerospace product standards.
Primary Item Type:
British Standard
Identifiers:
ISBN 0 580 28732 7
ICS 49.030.30 Nuts
Language:
English
Subject Keywords:
Grades (quality); Dimensions; Classification systems; Diameter; MJ threads; Roughness (surface); Dimensional tolerances; Nuts; Stress; Locknuts; Anchor nuts; Threaded fasteners; Designations
First presented to the public:
6/26/2026
Original Publication Date:
10/15/1997
Previously Published By:
British Standards Institution
Place Of Publication:
London, United Kingdom
Citation:
Extents:
Number of Pages - 2
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2026-06-26 17:01:42.103
Submitter:
Engku Shahidil Engku Ab Rahman

All Versions

Thumbnail Name Version Created Date
BS A 321:1997 Aerospace — Nuts, anchor, self-locking, floating, self-aligning, single 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 — Dimensions1 2026-06-26 17:01:42.103
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