Abstract: An aluminum alloy material for use in a terminal, which material contains a crystalline structure having 30% or more of a space factor of crystal grains having a crystal grain size of 30 &mgr;m or less. A terminal containing the aluminum alloy material.

Abstract: An overhead cable includes an outermost surface formed by twisting together a plurality of segment strands. A plurality of spiral grooves form recesses having substantially rectangular cross-sections and are provided at intervals in a circumferential direction of either the outer surface of the segment strands or the outer surface regions of boundary portions where twisted segment strands adjoin each other. Thin segment strands and at least one thick segment strand form the outermost layer. A recessed portion is provided at one side surface among two surfaces of the segment strands forming the outermost layer, a projecting portion is provided at the other side surface, and the strands are twisted together so that the recessed portions and the projecting portions mate.

Abstract: An optical fiber complex overhead line including a spacer formed with a plurality of helical grooves in its outer periphery extending along the axial direction, each helical groove shaped to be able to accommodate at least two bundles of multi-core type optical fiber in the width direction of the groove, at least two bundles of multi-core type optical fiber accommodated in each of the helical grooves, a protective optical fiber covering accommodating the spacer, and a plurality of conductor strands arranged around the protective optical fiber covering.