A suspension device for supporting an air brake hose on a rail car is disclosed. The device includes a strap having a clevis at one end and a plurality of apertures in spaced relation lengthwise along the strap. A clevis pin is used to attach the clevis to a lug on the coupling of the air brake hose. The strap is inserted through a fitting on the coupler of the railcar and received within the bore of a collar. A through hole in the collar receives a strap pin that also extends through the apertures in the strap to lock the collar in place. The collar prevents the strap from passing through the bracket. The suspension device is provided as a kit wherein all of the components are integrally molded together and connected by sprue portions. A method of molding the device is also disclosed.