| 摘要 |
PROBLEM TO BE SOLVED: To provide technology capable of suppressing inclination of a gasket when a metal fitting is mounted.SOLUTION: This metal fitting includes a barrel part extended from the tip side toward the rear end side thereof, screw threads spirally extending from the tip side to the rear end side on a lateral wall of the barrel part, and a gasket disposed on the rear end side of the barrel part. When a screw thread on the rearmost end side is set as a first screw thread, a screw thread shifting to the tip side for one screw pitch from the first screw thread is set as a second screw thread, and the highest screw thread among those screw threads excluding the first screw thread and the second screw thread is set as a third screw thread, the height of the first screw thread is not less than 75% of the third screw thread, and the height of the second screw thread is not less than 90% of the third screw thread. |
