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BS A 317:1997 Aerospace - Nuts, hexagonal, plain, normal height, normal across flats, with MJ threads, classifications: 600 MPa (at ambient temperature)/120 °C, 600 MPa (at ambient temperature)/235 °C, 900 MPa (at ambient temperature)/425 °C, 1 100 MPa (at ambient temperature)/235 °C, 1 100 MPa (at ambient temperature)/315 °C, 1 100 MPa (at ambient temperature)/650 °C, 1 210 MPa (at ambient temperature)/730 °C, 1 250 MPa (at ambient temperature)/235 °C and 1 550 MPa (at ambient temperature)/600 °C - Dimensions

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This International Standard specifies the dimensions of plain, hexagonal nuts, reduced height, normal across flats, with MJ threads, of classifications: 600 MPa (at ambient temperature)/120 °C, 600 MPa /235 °C, 900 MPa /425 °C, 1 100 MPa /235 °C, 1 100 MPa /315 °C, 1 100 MPa /650 °C, 1 210 MPa /730 °C, 1 250 MPa /235 °C and 1 550 MPa /600 °C 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.
Primary Item Type:
British Standard
Identifiers:
ISBN 0 580 28788 2
ICS 49.030.30 Nuts
Language:
English
Subject Keywords:
Tensile stress; Threaded fasteners; Angles (geometry); Fasteners; Hexagonal-head fasteners; Nuts; Diameter; Dimensional tolerances
First presented to the public:
6/25/2026
Original Publication Date:
11/15/1997
Previously Published By:
British Standards Institution
Place Of Publication:
London, United Kingdom
Citation:
Extents:
Number of Pages - 3
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2026-06-25 18:38:07.302
Submitter:
Engku Shahidil Engku Ab Rahman

All Versions

Thumbnail Name Version Created Date
BS A 317:1997 Aerospace - Nuts, hexagonal, plain, normal height, normal across flats, with MJ threads, classifications: 600 MPa (at ambient temperature)/120 °C, 600 MPa (at ambient temperature)/235 °C, 900 MPa (at ambient temperature)/425 °C, 1 100 MPa (at ambient temperature)/235 °C, 1 100 MPa (at ambient temperature)/315 °C, 1 100 MPa (at ambient temperature)/650 °C, 1 210 MPa (at ambient temperature)/730 °C, 1 250 MPa (at ambient temperature)/235 °C and 1 550 MPa (at ambient temperature)/600 °C - Dimensions1 2026-06-25 18:38:07.302
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