DIN 65447-2016 航空航天系列. 带中等长度MJ螺纹的耐蚀镍合金紧公差十二角头螺栓. 公称抗拉强度1 550 MPa, 温度不超过315 ℃
Aerospace series - Bihexagonal head bolts, close tolerance, with medium-length MJ thread, corrosion resisting nickel alloy - Nominal tensile strength 1 550 MPa, for temperatures up to 315 °C