BS EN 20898-7-1995 紧固件机械性能.标称直径为1MM到10MM的螺栓和螺钉的扭转试验和最小扭矩

标准号：BS EN 20898-7-1995
中文标准名称：紧固件机械性能.标称直径为1MM到10MM的螺栓和螺钉的扭转试验和*小扭矩
英文标准名称：Mechanical properties of fasteners - Torsional test and minimum torques for bolts and screws with nominal diameters 1 mm to 10 mm
标准类型：J13
发布日期：1995/7/15 12:00:00
实施日期：1995/7/15 12:00:00
中国标准分类号：J13
国际标准分类号：21.060.10
适用范围：This part of ISO 898 specifies a torsional test for the delermination of the breaking torque of bolts and screws with nominal diameters 1 mm to 10 mm with property classes 8.8 to 12.9 in accordance with ISO 898-1. The test applies to bolts and screws with thread less than M3 for which no breaking and proof loads are indicated in ISO 898-1, as well as to short bolts and screws with nominal diameters 3 mm to 10 mm which cannot be subjected to a tensile test. The minimum breaking torques are not valid for hexagon socket set screws.