标 准 号：DIN 933-1987简体中文标题：M1.6~M52 六角头螺钉 产品等级A和B级繁体中文标题：M1.6~M52 六角头螺钉 产品等级A和B级English Name：M1.6 to M52 hexagon head screws threaded up to the head product grades A and B...