EN 2810:2001 航空航天系列.钝化,耐热钢制,标准对边,高度降低的槽头/齿形头六角螺母.等级:900MPa(环境温度)/650℃
Aerospace series - Nuts, hexagon, slotted/castellated, reduced height, normal across flats, in heat resisting steel, passivated - Classification: 900 MPa (at ambient temperature)/650 °C