BS EN 3637:2023
航空航天系列 自锁双六角形(双缩径)螺母,采用耐热镍基合金制成 NI-P101HT (Waspaloy),镀银,分类:1 210 MPa/730 °C
Aerospace series. Nut, self-locking, bi-hexagonal (double reduced), in heat resisting nickel base alloy. NI-P101HT (Waspaloy), silver plated, Classification: 1 210 MPa/730 °C