DIN EN 4424:2007
航空和航天.有约束力的单叉螺纹柄:1.5旋进深度×钛合金螺纹直径的可调叉形杆端.尺寸和负载
Aerospace series - Rod-ends, adjustable, single fork and threaded shank with engagement: 1,5 × thread diameter in titanium alloys - Dimensions and loads; German and English version EN 4424:2006