ISO 9140 pdf download

ISO 9140 pdf download.Aerospace — Nuts, plain or slotted (castellated) — Test methods 1 Scope This International Standard specifies test methods for metric plain or slotted (castellated) nuts, with MJ threads in accordance with ISO 5855-2, for use in aerospace construction. It describes the test device and the method for each test. It is applicable to nuts as defined above, provided that the relevant documents (product standard, definition document, procurement specification, etc.) refer to this International Standard. This International Standard is to be used in conjunction with ISO 91 39 or any other similar document. 2 Normative references The following normative documents contain 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 editions of the normative documents 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 691 :1 997, Assembly tools for screws and nuts — Wrench and socket openings —Tolerances for general use . ISO 1 024:1 989, Metallic materials — Hardness test — Rockwell superficial test (scales 1 5N, 30N, 45N, 1 5T, 30T and 45T) . ISO 5855-2:1 988, Aerospace — MJ threads — Limit dimensions for bolts and nuts . ISO 6507-1 :1 997, Metallic materials — Vickers test hardness — Part 1 : Test method . ISO 6508:1 986, Metallic materials — Hardness test — Rockwell test (scales A – B – C – D – E – F – G – H – K) . ISO 91 39:1 998, Aerospace —Nuts, plain or slotted (castellated) — Procurement specification. 3 Inspections and tests 3.1 Hardness test 3.1.1 Procedure The procedure is a function of the nut configuration and of the available apparatus. The authorized procedures are as follows: – Rockwell hardness, in accordance with ISO 6508; – Vickers hardness HV 5 to HV 1 00, in accordance with ISO 6507-1 ; – Rockwell superficial hardness, in accordance with ISO 1 024; – microhardness. 3.1.2 Method This test shall be carried out at ambient temperature. The measurement shall be taken on the bearing surface or on one of the flats. Should this not be possible, carry out...