Abstract: A fastening device (10) for a ratchet-type strap (12) includes a ratchet engaging member (30) for releasably engaging a ratchet-type strap (12) to prevent movement of the strap in a first direction, and a tightening member (35) for releasably engaging a ratchet-type strap (12) for moving the strap in a second direction. The engaging member (30) and tightening member (35) are resiliently biased with respect to each other by a single biasing member (46) which is configured to bias the engaging member (30) into a position to engage with the strap and to bias the tightening member (35) out of a position of engagement with the strap (12).