供应各种规格的英制内六角螺栓(英制杯头螺丝),常用规格有:螺纹直径:1/8-405/32-323/16-241/4-205/16-183/8-167/16-141/2-125/8-113/4-107/8-91-8螺纹长度(寸):1/43/81/25/83/411-1/41-1/21-3/422-1/22-1/22-3/433-1/43-1/244-1/255-1/266-1/278910)