This SAE Standard covers material, dimensional, performance, and test requirements for metric thread rolling screws suitable for use in general engineering applications. This SAE Standard has been revised. In this current revision, the significant changes from the previous 2017 revision include: reducing and limiting the maximum core hardness limit of Type 2 screws to 36 HRC; revising the hydrogen embrittlement testing requirements and methods (3.7.4 and 4.9) to reflect up-to-date understanding and practices related to hydrogen embrittlement; and revising the unthreaded underhead distance to establish more definitive measuring points and prevent rolling into the fillet radius.
Metric Thread Rolling Screws
2021-11-09
Conference paper
English
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SAE Technical Papers | 2017
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