[Problem] To provide: a vehicular arm component which can be shaped quickly and easily by pressing or hemming without welding, can be produced with a high yield rate, is cost effective, and has excellent strength and hardness against the repeated applicati...

[Problem] To provide a coupling arm for a vehicle, said coupling arm being lightweight, having a strength that withstands both tensile force and compressive force, being easy and cost effective to manufacture, and being formed from a highly reliable compos...

A protrusion (30) is formed so as to rise from a base plate (W), and the protrusion (30) is formed into a spacer (12) having predetermined outer diameter (D) and height (H). In forming the spacer (12), first the protrusion (30) is shaped to have a diameter...