Interlocking hook assemblies for elastic and rigid straps and cords including a strap member and a pair of similar interlocking hook devices connected to each end of strap member which can be adjusted to desired length. Each interlocking hook device is provided with apertures which are fixedly attached to the distal end of the hook body opposite the hook. Each hook device can be connected, preferably in a locking manner, onto the other hook device creating a closed hook assembly thereby disabling the hooks to prevent entanglement of elastic or rigid straps when not in use or during storage and/or transportation. Multiple straps can be connected end-to-end forming an elongated elastic or rigid strap of desired length having closed central hooks with open hooks on each end. Interlocking hook assemblies for elastic or rigid straps and cords including two similar interlocking hook devices with a connector groove and a dual bar adjustable webbing slider for elastic or rigid straps and cord members. Each interlocking hook device is provided with a connector groove designed to allow each hook to engage the other within their respective grooves and to releasably lock them together.