21.120.01

Shafts and couplings in general

21.120.10

Shafts

21.120.20

Couplings

21.120.30

Keys and keyways, splines

21.120.40

Balancing and balancing machines

21.120.99

Other standards related to shafts and couplings
NF ISO 4156-3, E22-144-3 (10/2021)

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BS ISO 4156-2:2021

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DIN 5481-4:1955-04

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DIN 5482-2:1973-03

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DIN 6881:1956-02

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