BS ISO 9609:2016
航空航天.带MJ螺纹的高度降低和标准交叉平面的平六角头螺母分类:450 MPa(室温)/120℃、450 MPa(室温)/235℃、600 MPa(室温)/425℃、900 MPa(室温)/235℃、900 MPa(室温)/315℃、900 MPa(室温)/650℃、1100 MPa(室温)/235℃、1100 MPa(室温)/730℃、1250 MPa(室温)/600℃.尺寸
Aerospace - Nuts, hexagonal, plain, reduced height, normal across flats, with MJ threads, classifications: 450 MPa (at ambient temperature) /120 degrees C, 450 MPa (at ambient temperature) /235 degrees C, 600 MPa (at ambient temperature) /425 degrees C, 9