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French standard NF E 25 030

French standard NF E 25 030

French standard NF E 25 030

(OP)
Is anyone familiar with French standard NF E 25 030,

FASTENERS - SCREWED JOINTS - DESIGN, CALCULATION AND ASSEMBLY CONDITIONS

Or, in French, ELEMENTS DE FIXATION - ASSEMBLAGES VISSES - CONCEPTION, CALCUL ET CONDITIONS DE MONTAGE

I have a supplier calculation that cites this as the basis for the calculation, however not all the terms are defined in what I have.

Can someone tell me how the standard defines the terms gamma and lambda?

Lambda seems to be a stiffness ratio, but I don't know what is in th numerator and what is in the denomiantor.

Thanks,



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