BS A 316-1997
带MJ螺纹的标称高度和标称交叉平面的有槽(槽顶)六角头螺母分类:600MPa(室温)/120℃、600MPa(室温)/235℃、900MPa(室温)/425℃、1100MPa(室温)/235℃、1100MPa(室温)/315℃、1100MPa(室温)/650℃、1210MPa(室温)/730℃、1250MPa(室温)/235℃、1550MPa(室温)/600℃.尺寸
Nuts, hexagonal, slotted (castellated), normal height, normal across flats, with MJ threads, classifications - 600 MPa (at ambient temperature)/120 °C, 600 MPa (at ambient temperature)/235 °C, 900 MPa (at ambient temperature)/425 °C, 1100 MPa (at ambient