PROBLEM TO BE SOLVED: To provide a rod clamp that can be served for both of a fishing rod of a small diameter and a fishing rod of a thick diameter, and a headed cylindrical nut used for the same.SOLUTION: A rod clamp 1 according to the present invention includes a clamp member 2 and a headed cylindrical nut 6 threadedly engaged to a bolt 30. A first abutment part 17 abutted with the clamp member 2 and defining a screwing fastening seat surface is provided while a cylindrical part 6A of the cylindrical nut 6 is inserted in a through-hole 2a of the clamp member 2 on one side of a head 6B of the cylindrical nut 6. A second abutment part 15 abutted with the clamp member 2 and defining the screwing fastening seat surface is provided while the cylindrical part 6A is not inserted in the through-hole 2a of the clamp member 2 on the other side of the head 6B.COPYRIGHT: (C)2016,JPO&INPIT【課題】細径の釣竿および太径の釣竿の両方に兼用できるロッドクランプ及びそれに用いる頭部付き円筒ナットを提供する。【解決手段】本発明に係るロッドクランプ1は、クランプ部材2と、ボルト30に螺合される頭部付き円筒ナット6とを備え、円筒ナット6の頭部6Bの一方側には、クランプ部材2の通孔2aに円筒ナット6の円筒部6Aが挿通された状態でクランプ部材2に当接して螺合締め付け座面を規定する第1の当接部17が設けられ、頭部6Bの他方側には、クランプ部材2の通孔2aに円筒部6Aが挿通されない状態でクランプ部材2に当接して螺合締め付け座面を規定する第2の当接部15が設けられる。【選択図】 図2
