内六角平端紧定螺钉DIN913/ISO4026/GB7745H内六角***紧定螺钉DIN914/ISO4027/GB7845H内六角圆柱端紧定螺钉DIN915/ISO4028/GB7945H内六角凹端紧定螺钉DIN916/ISO4029/GB8045H内六角螺栓英制ANSIB18.3/ASTMA574UNC/UNFG5/8.8,G8/12.9产品规格:材料：钢8.8,10.9,12.9,45H英制规格:直径-#5”~5/16”长度-1/8”~4”公制规格:直径-M2~M12长度-6mm~100mm*销售电话：021-61552808)