DIN ISO 9154:2017 航空航天 螺栓,带 MJ 螺纹,由耐热镍基合金制成,强度等级 1550 MPa 采购规范(ISO 9154:2016)
Aerospace - Bolts, with MJ threads, made of heat-resistant nickel-based alloy, strength class 1 550 MPa - Procurement specification (ISO 9154:2016); Text in German and English