ISO 8538:1999
航空航天.等级为:1100 MPa(环境温度)/235℃、1100 MPa(环境温度)/315℃和1100 MPa(环境温度)/425℃、带沉孔和锁紧垫片、具有MJ螺纹的六角自锁螺母.尺寸
Aerospace - Nuts, hexagonal, self-locking, with counterbore and captive washer, with MJ threads, classifications: 1100 MPa (at ambient temperature)/235 °C, 1100 MPa (at ambient temperature)/315 °C and 1100 MPa (at ambient temperature)/425 °C - Dimensions