PROBLEM TO BE SOLVED: To provide a connector and a fluid bag assembly capable of easily and smoothly releasing the connection between a connector and a suction tool. A connector of the present invention has a tubular shape that is connected by screwing to a first opening portion of a fluid bag that has a bag body that stores a fluid and a tubular first opening portion that discharges the fluid. A connector comprising a first connecting portion and a tubular second connecting portion that is connected by screwing to a second opening portion of a suction tool having a tubular second opening portion, the first screw portion and the first screw portion The 1st mouth side screw part is 0.5 rotations or more and 5 rotations or less until screwing is completed, and the 2nd screw part and the 2nd mouth side screw part are 0.5 rotations or more and 5 rotations until screwing is completed. Below, the force F1 required to release the screwing engagement between the first connecting portion and the first mouth portion is greater than the force F2 required to release the screwing engagement between the second connecting portion and the second mouth portion. large. [Selection diagram] FIG.【課題】コネクタと吸引具との接続の解除を容易かつ円滑に行うことができるコネクタおよび流体バッグ組立体を提供すること。【解決手段】 本発明のコネクタは、流体を収納するバッグ本体と、流体が排出される筒状の第１口部とを有する流体バッグの第１口部と螺合によって接続される筒状の第１接続部と、筒状の第２口部を有する吸引具の第２口部と螺合によって接続される筒状の第２接続部とを備えるコネクタであって、第１ねじ部と第１口部側ねじ部とは、螺合完了まで０．５回転以上５回転以下であり、第２ねじ部と第２口部側ねじ部とは、螺合完了まで０．５回転以上５回転以下であり、第１接続部と第１口部との螺合を解除するのに要する力Ｆ１は、第２接続部と第２口部との螺合を解除するのに要する力Ｆ２よりも大きい。【選択図】図２
