Abstract: A synthetic resin fastener for fixing a first member having a first attaching hole formed therein to a second member having a second attaching hole formed therein. The fastener includes a head portion for engagement with a surface-side peripheral edge of the first attaching hole, a seat portion extending from a rear surface of the head portion for engagement with a surface-side peripheral edge of the second attaching hole, and an anchor portion extending from a rear surface of the seat portion for engagement with a back-side peripheral edge of the second attaching hole.

Abstract: Disclosed is a hose unit including harnesses which can be easily attached to and detached from the other portion of the unit at the time of fastening thereof to the body of a motor vehicle or the like and which hardly undergoes stress even at the time of vibration or torsion of the hose of the unit. The hose unit includes the hose to which respective end metal members are secured. Holders are removably fastened to these members. One harness extends along the hose and is fastened to the holders and another harness is connected to the former through the holders and extends therefrom. Also disclosed is a special hose clamp.