To favorably distribute a load among multiple strands of a cable, by interposing a spacer sheet between the superposed layers of strands positioned in the inside of fitting clamp 5.

A cable 1 is constituted of a plurality of strands 7 distributed to a plurality of layers superposed with each other. When they are naturally superposed so as to adjacently position, the base ends of respective strands are positioned alternately in grooves formed at the top between two strands parallelly and horizontally arranged in the layer just thereunder. The filling component for the respective clearances T is constituted of a sheet 11 ribbed with parallel strips 12 alternately projected from both faces. Respective strips form a prism shape partitioned by bent triangles at the base bottom. The combined body 13 of respective strips 11 connecting together continuous two sets of ribs or strips 12 has a width corresponding to the mutual separation of the two clearances T in the cable 1.