标准查询
DIN EN ISO 7040 1型非金属嵌件六角锁紧螺母—性能等级5、8和10级
(ISO 7040:1997 | DIN EN ISO 7040 | 代替 DIN 982|DIN 6924)
Prevailing torque type hexagon nuts (with non-metallic insert),style 1 - Property classes 5,8 and 10