ISO 5858:1999 pdf free.Aerospace — Nuts, self-locking, with maximum operating temperature less than or equal to 425 degrees C — Procurement specification.
ISO 5858 specifies the required characteristics for metric self-locking nuts, with MJ threads, for use in aerospace construction at a maximum temperature less than or equal to 425 °C.
ISO 5858 is applicable to nuts as defined above, provided that reference is made to this International Standard in the relevant definition document.
2 Normative references
ISO 691:1997, Assembly tools for screws and nuts — Wrench and socket openings — Tolerances for general use. ISO 1463:1982, Metallic and oxide coatings — Measurement of coating thickness — Microscopical method.
ISO 2859-1 :1999, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AOL) for lot-by-lot inspection.
ISO 3452:1984, Non-destructive testing — Penetrant inspection — General principles.
ISO 3887:1976, Steel, non-alloy and low-alloy — Determination of depth of decarburization.
ISO 4288:1996, Geometrical Product Specifications (GPS) — Surface texture: Profile method — Rules and procedures for the assessment of surface texture.
ISO 5855-2:1999, Aerospace — MJ threads — Part 2: Limit dimensions for bolts and nuts.
4 Quality assurance
4.1 General
4.1.1 Manufacturer’s approval
The manufacturer shall conform to the quality assurance and approval procedures defined by ISO 9002.
The purpose of these procedures is to ensure that a manufacturer has a quality system and the capability for continuous production of nuts complying with the specified quality requirements.
Approval of the manufacturer shall be granted by the Certification Authorities, or their appointed representative, who may be the prime contractor.
4.1.2 Qualification of nuts
The purpose of qualification inspections and tests of nuts is to check that the design and manufacturing conditions for a nut allow it to satisfy the requirements of this International Standard.
Qualification of the nuts shall be granted by the Certification Authorities in the purchaser’s country, or their appointed representative, who may be the prime contractor.
4.1.2 Qualification of nuts
The purpose of qualification inspections and tests of nuts is to check that the design and manufacturing conditions for a nut allow it to satisfy the requirements of this International Standard.
Qualification of the nuts shall be granted by the Certification Authorities in the purchaser’s country, or their appointed representative, who may be the prime contractor.
4.1.3 Production acceptance of nuts
The purpose of production acceptance inspection and tests of a nut is to check, as simply as possible, using a method which is inexpensive but the most representative of the actual conditions of use, with the uncertainty inherent in statistical sampling, that the nuts satisfy the requirements of this International Standard.
Production acceptance inspections and tests shall be carried out by the manufacturer, or under his responsibility. The manufacturer is responsible for the quality of the nuts manufactured.ISO 5858:1999 pdf free download.