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In addition to dimensional and geometrical tolerances, the DIN 20934 specification also addresses material requirements for automotive gear wheels. This includes specifying the type of material, such as steel or other alloys, as well as the heat treatment processes that must be employed to achieve the desired mechanical properties, such as hardness and wear resistance. By establishing these material requirements, the DIN 20934 standard ensures that gear wheels will possess the necessary strength and durability to withstand the demanding conditions of automotive use
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din 934 specification.

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ss washer size chart