BS EN 4118:2004
航空航天系列.耐热钢FE-PA2601(A286)制自锁,带镀银螺纹的十二角螺母.等级:1100 MPa(室温)/650℃
Aerospace series - Nuts, bihexagonal, self-locking, in heat resisting steel FE-PA2601 (A286), silver plated on thread - Classification - 1 100 MPa (at ambient temperature) / 650 °C