n.槽口刨,用凹刨做的槽,凹刨,凹槽
Top view of fillister head screw. Selection box represents thread diameter.
槽头螺钉的俯视图. 选择框代表螺纹直径.
Side view of fillister head slotted screw with adjustable thread length.
螺纹长度可调整的槽头螺钉的侧面图.