DIN EN 4306-2007 航空航天系列.钝化防腐蚀钢制带埋头拉紧螺钉用套筒(0.50 mm 壁厚)
Aerospace series - Sleeves, tubular, for tension screws with flush head, in corrosion resisting steel, passivated, (0,50 mm wall thickness); German and English version EN 4306:2005
This standard specifies the characteristics and technical requirements of tubular sleeves for tension screws with flush head, which may be plain or provided with a series of annular grooves, in corrosion resisting steel, passivated, with a 0,50 mm wall thickness, for maximum operating temperature 650 ? for aerospace applications.