[1]三针县线夹座BC-20 [2]六针县线夹座BC-21 [3]九针导线板BC-22 [4]三针导线板BC-23 [5]M5短夹线螺丝BC-24 [6]尼龙轮BC-25 [7]六针导线板BC-26 [8]BC-27 [9]BC-28 [10]BC-29 [11]长支撑螺栓BC-30 [12]支撑架BC-31[13] 滚轮座BC-32 [14]牵引轴承座BC-33 [15]换色扳手BC-34 [16]梭子轴BC-35  [17]BC-36 [18]铜接头BC-37