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Turnbuckles
A turnbuckle is a device used to adjust the tension or length of a rope, cable, or other tensioning system. It’s made up of a small metal frame with two threaded eye bolts, one with a right-hand thread and one with a left-hand thread. To adjust the tension, you rotate the frame, which screws the eye bolts in or out simultaneously.
Turnbuckles are used in many applications, including:
- Construction: Aircraft, bridge, and pipe systems
- Shipping: Rigging and lashing
- Theater: Lifting equipment
- Marine: Transportation
- Boxing and wrestling: Tensioning the ropes in the ring
- Fences: Tensioning perimeter cables
When choosing a turnbuckle, you can consider the material it’s made from and the end fittings it has:
Material
Galvanized steel is cheaper but less corrosion resistant than stainless steel. Stainless steel is a better choice for outdoor use or environments with high moisture or saltwater.
End fittings
The most popular types are eye and eye, and jaw and eye. The name of the turnbuckle comes from its end fittings.
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