DIN EN 4304-2007 航空航天系列.钝化防腐蚀钢制带埋头剪切螺钉用管状管套(内壁厚度0.25mm)
Aerospace series - Sleeves, tubular, for shear screws with flush head, in corrosion resisting steel, passivated, (0,25 mm wall thickness); German and English version EN 4304:2005
This standard specifies the characteristics and technical requirements of tubular sleeves for shear screws with flush head, which may be plain or provided with a series of annular grooves, in corrosion resisting steel, passivated, with a 0,25 mm wall thickness, for maximum operating temperature 650 ? for aerospace applications.