ISO 12260:1996 航空航天 强度等级小于或等于1100MPa、金属材料制成、有涂覆或未涂覆、短的或中等长度MJ螺纹,阶梯杆型、内偏高扭矩十字槽或无打滑扳动的平头螺钉 尺寸
Aerospace - Screws, pan head, internal offset cruciform ribbed or unripped drive, stepped shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes less than or equal to 1100 MPa - Dimensions