ISO 12278 pdf download.Aerospace — Nuts, barrel, self-locking, floating, self-aligning, with MJ threads, classifications
1 Scope
This International Standard specifies the dimensions of self-locking, floating, self-aligning barrel nuts, with MJ threads, for classifications : 900 MPa 1 ) /235 °C 2) , 1 1 00 MPa 1 ) /235 °C 2) , 1 250 MPa 1 ) /235 °C 2) and 1 550 MPa 1 ) /235 °C 2) . This International Standard is only applicable for the compilation of aerospace product standards.
2 Normative reference
The following normative document contains provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 5855-2:1 999, Aerospace — MJ threads — Part 2: Limit dimensions for bolts and nuts .
3 Configuration and dimensions
See Figure 1 and Table 1 . Dimensions and tolerances are expressed in millimetres. They apply after any surface coating(s) but before the application of any lubricant.