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Shade accessories

Turnbuckle (rigging screw)

Fork or eye ends on a threaded body: turn it to pull the corner tight.

Turnbuckle (rigging screw)

A turnbuckle is a threaded body with a left-hand thread at one end and a right-hand thread at the other, so turning the body pulls both ends together. Ends come as fork, eye, hook or threaded stud. On a shade it sits between the membrane corner and the mast or anchor, and it is the main tool for bringing the fabric to its final tension and taking up slack later. Hooks are best avoided on shades because they can slip out in wind; forks and eyes are the safer choice.

Also called rigging screw, tensioner, fork-fork turnbuckle, eye-fork turnbuckle

Where it is used

  • Final tensioning of membrane and sail corners
  • Taking up slack after the fabric settles
  • Tie-back cables to ground anchors
  • Bracing cables on steel frames

Materials and sizes

Commonly available in hot-dip galvanized steel or stainless steel 304/316, with fork-fork, eye-fork, eye-eye and stud ends. Common sizes on request.

Price on request
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Questions about this part

Stainless or galvanized turnbuckle for Riyadh?

Both work in Riyadh's dry heat. Galvanized is economical and its threads turn smoothly. Stainless looks cleaner on visible corners; use anti-seize on stainless threads so they do not bind. Near pools or the coast, choose stainless 316.

How do I stop a turnbuckle from loosening?

After final tension, lock it: tighten the lock nuts if it has them, or tie the body to the ends with stainless lock wire. Check the corners after the first strong winds.

Fork-fork or eye-fork?

Match each end to what it connects to: a fork goes over a plate or eye, an eye goes into a fork or shackle. Send a photo of the corner and we suggest the ends.

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