BS EN 4123:2004
航空航天系列.自锁紧螺纹镀银的耐热镍基合金NI-PH 2601(铬镍铁合金718)带柄螺母.等级:1550 MPa(环境温度)/600℃
Aerospace series - Shank nuts, self-locking, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), silver plated on thread - Classification - 1 550 MPa (at ambient temperature) / 600 °C