DIN 65442-2016 航空航天.使用温度315℃以下公称抗拉强度1550MPa耐蚀镍合金制中长等度MJ螺纹的紧公差十二角头螺栓.不适用于新设计
Aerospace - 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; Inactive for new design