EN 4123 : 2018现行
AEROSPACE SERIES - SHANK NUTS, SELF-LOCKING, IN HEAT RESISTING NICKEL BASE ALLOY NI-PH2601 (INCONEL 718), SILVER PLATED ON THREAD - CLASSIFICATION: 1550 MPA (AT AMBIENT TEMPERATURE)/600 DEGREE CELSIUS
出版：Comite Europeen de Normalisation
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