ISO 9256:1993
航空航天.強度等級小于或等于1100MPa、有涂層或無涂層、金屬材料制成的標準直徑或中徑柄、長MJ螺紋、大六角頭螺栓.尺寸
Aerospace; bolts, large hexagonal head, normal or pitch diameter shank, long length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1100 MPa; dimensions