How do you thread and lock a ratchet strap so it actually holds?
Most ratchet strap failures aren't the strap failing. They're the strap never having been threaded right in the first place.
Applies to
- Process
- Cargo securing — trailers, utes, roof racks
- Materials
- Standard ratchet straps, including on round loads like tanks and cylinders
- Setup
- The strap, and nothing else
- Measurement definition
- Wraps counted on the mandrel once the strap is at tension
Why it matters
Too few wraps on the mandrel and the webbing can pull back through under load. Too many and the ratchet jams solid and you can't release it at the other end.
Every turn of the handle spent taking up slack is a turn of webbing wrapped on the mandrel doing nothing. Pull the slack by hand and the ratchet does what it's for — tensioning.
What good looks like
- Slack pulled out by hand before the handle moves at all
- Two or three wraps on the mandrel at full tension
- On a round load, the strap routed so the load can't roll out from under it
How to apply it
- Open the ratchet fully and route the tail up through the centre slot of the mandrel.
- Pull the slack through by hand until the strap is snug against the load.
- Crank the handle to tension. Stop when it's tight, not when you're tired.
- On round loads, check the routing stops the load rolling, and re-check tension after the first few kilometres.
Exceptions & tradeoffs
Straps have a rated capacity and it's printed on the label. A strap is not a substitute for a chain on a heavy or high-value load.
Webbing with cuts, fraying or UV chalking is done. It fails suddenly and completely, not gradually.
Common mistakes
- Ratcheting all the slack in and ending up with eight wraps and a jammed mandrelPull the slack by hand first
- Cranking until the handle won't moveOver-tensioned straps crush loads and shock-load the anchor points
Threading the strap through the mandrel slot and removing slack by hand before ratcheting — Tie Straps How?! Nooo Waaay! ↗ at 0:12–0:47.
Summarized and independently edited by Start Here. We couldn't tell from the frames whether the clip is demonstrating threading or specifically securing a round tank — confirm before relying on the detail. The wrap count and the inspection guidance are our editorial notes.