ISO 3168 pdf download.Aerospace — Nuts, anchor, self-locking, fixed, single lug, with counterbore, with MJ threads, classifications
1 Scope
This International Standard specifies the dimensions of self-locking, fixed, single lug anchor nuts, with counterbore, with MJ threads, for classifications 1 1 00 MPa 1 ) /235 ∞C 2) , 1 1 00 MPa 1 ) /31 5 ∞C 2) and 1 1 00 MPa 1 ) /425 ∞C 2) . This International Standard is only applicable for the compilation of aerospace product standards.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 5855-2:1 988, Aerospace — MJ threads — Part 2: Limit dimensions for bolts and nuts. ISO 5858:1 991 , Aerospace — Self-locking nuts with maximum operating temperature less than or equal to 425 °C — Procurement specification ISO 8788:1 987, Aerospace — Fasteners — Tolerances of form and position for 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. The metallic cap (optional) shall remain joined (type of attachment at the user’s discretion) to the nut at the maximum operating temperature. See test conditions specified in ISO 5858