BS ISO 3185:2021
航空航天 强度等级小于或等于1100MPa、金属材料制成、有涂层或无涂层、短或中等长度MJ螺纹、标称杆、标称十二角头螺栓 尺寸
Tracked Changes. Aerospace. Bolts, normal bihexagonal head, normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa. Dimensions