DIN EN 4118:2006
航空航天系列.螺纹镀银的耐热钢FE-PA2601 (A286)制双六角头自锁螺母.等级:1100MPa(室温)/ 650 °C
Aerospace series - Nuts, bihexagonal, self-locking, in heat resisting steel FE-PA2601 (A286), silver plated on thread - Classification: 1100 MPa (at ambient temperature) / 650 °C; German and English version EN 4118:2004