ISO 12258 pdf download

ISO 12258 pdf download.Aerospace — Bolts, reduced bihexagonal head, normal or pitch diameter shank, long length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 275 MPa — Dimensions 1 Scope This International Standard specifies the dimensions of reduced bihexagonal head bolts, with normal or pitch diameter shank and long length MJ threads, in metallic material, coated or uncoated, of strength classes less than or equal to 1 275 MPa. This International Standard is 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 3353:1 992, Aerospace — Rolled threads for bolts — Lead and runout requirements. ISO 4095:1 998, Aerospace — Bi-hexagonal drives — Wrenching configuration — Metric series. ISO 5855-2:1 988, Aerospace — MJ threads — Part 2: Limit dimensions for bolts and nuts. ISO 791 3:1 994, Aerospace — Bolts and screws, metric — Tolerances of form and position. 3 Configuration and dimensions See figure 1 and table 1 . Dimensions and tolerances are expressed in millimetres. They are applicable after any surface coating, but before the application of any lubricant. Tolerances of form and position are specified in ISO 791 3.