KS W ISO 5856-2009(2019) 航空航天-强度等级小于或等于1100兆帕的有涂层或无涂层金属材料短或中长MJ螺纹标准柄内偏置十字肋传动100°标准沉头螺钉-尺寸
Aerospace-Screws, 100° normal countersunk head, internal offset cruciform ribbed drive, normal shank, short or medium length MJ threads, metallic material, coated or uncoated, strength classes less th