BS ISO 12261-2016 航空航天.强度级小于或等于1100MPa的涂层或未涂层金属材料制节径杆长长度MJ螺纹的内偏移十字形肋状或非肋状驱动的平头螺钉.尺寸
Aerospace. Screws, pan head, internal offset cruciform ribbed or unribbed drive, pitch diameter shank, long length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1 100 MPa. Dimensions