BS EN 3005-2004 pdf download

08-13-2021 comment

BS EN 3005-2004 pdf download.Nuts, self-locking, MJ threads, in heat resisting nickel base alloy NI-PH1302 (Waspaloy), silver plated or uncoated — Classification: 1 210MPa (at ambient temperature)/730 °C — Technical specification.
This BS EN 3005 specifies the characteristics, qualification and acceptance requirements for self-locking nuts with MJ threads in NI-PH1302, silver plated or uncoated for aerospace applications.
Classification: 1 210 MPa 1)1 730 c 2)
It is applicable whenever referenced.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3452, Non-destructive testing — Penetrant inspection — General principles
ISO 4288, Geometrical Product Specifications (GPS) — Surface texture: Profile method — Rules and procedures for the assessment of surface texture
ISO 8642, Aerospace — Self-locking nuts with maximum operating temperature greater than 425 °C — Test methods
EN 2786, Aerospace series — Electrolytic silver plating of fasteners 3)
EN 9133, Aerospace series — Quality management systems — Qualification procedure for aerospace
standard parts 3)
ASTM E 112-96, Standard Test Methods for Determining Average Grain Size 4)
3 Terms and definitions
For the purposes of this standard, the following terms and definitions apply.
quantity of finished nuts, of the same type and same diameter, produced from the same material obtained from the same melt, manufactured in the course of the same production cycle, following the same manufacturing route and having undergone all the relevant heat treatments and surface treatments
surface defect caused by folding over metal fins or sharp corners and then rolling or forging them into the surface
non-metallic particles originating from the material manufacturing process. These particles may be isolated or arranged in strings.
test temperature
ambient temperature unless otherwise specified
simple random sampling
the taking of n items from a population of N items in such a way that all possible combinations of n items have the same probability of being chosen
critical defect
a defect that, according to judgement and experience, is likely to result in hazardous or unsafe conditions for
individuals using, maintaining, or depending upon the considered product, or that is likely to prevent
performance of the function of a major end item
major defect
a defect other than critical, that is likely to result in a failure or to reduce materially the usability of the
considered product for its intended purpose
minor defect
a defect that is not likely to reduce materially the usability of the considered product for its intended purpose,
or that is a departure from established specification having little bearing on the effective use or operation of
this product
sampling plan
a plan according to which one or more samples are taken in order to obtain information and possibly to reach
a decision
limiting quality (LQ10)
in a sampling plan, the quality limit which corresponds to a specified 10 % probability of acceptance
acceptance quality limit (AQL)
a quality limit which in a sampling plan corresponds to a specified but relatively high probability of acceptance
It is the maximum per cent defective (or the maximum number of defects per hundred units) that, for purposes of sampling inspection can be considered satisfactory as a process average.
finished nut
a nut ready for use, indusive of any possible treatments andior surface coatings. as specified In the product
standard or definition document
definition document
document specifying all the requirements fOr finished nuts
self-locking torque
the torque to be applied to the nut or bolt to maintain movement of rotation in relation to the associated part, the assembly being under no axial load and the nut locking system being completely engaged with the bolt (minimum protrusion of two pitches including end chamfer)
seating torque
the tightening torque to be applied to the nut or bolt to introduce or to increase the axial load In the assembly
unseating torque
the untightening torque to be apphed to the nut or bolt to reduce or remove the axial load in the assembly
breakaway torque
the torque required to start unscrewing the nut or bolt with respect to the associated part, with the nut locking device still fully engaged on the bolt, but after the axial load in the assembly has been removed by unscrewing half a turn followed by a halt in rotational movement
wrench feature torque
the torque to be applied to the wrenching feature of the nut
4 Quality assurance.BS EN 3005-2004 pdf download.

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