ISO 7412-1984 Hexagon bolts for high-strength structural bolting with large width across flats (shorISO 7412-1984 Hexagon bolts for high-strength structural bolting with large width across flats (short thread length) - Product grade C - Property classes 8.8 and 10.9
部份国外标准涉及版权问题,所以全部国外标准于2013年02月,全部删除!相关页面仅提供参考消息。