How to Measure a Turnbuckle?
A turnbuckle that is the wrong size will not fit, will not tension properly, or will run out of thread before the line is tight. Measuring correctly takes two minutes. This guide shows exactly what to measure on a turnbuckle.
Parts of a Turnbuckle
A turnbuckle has three parts: the central body, the left-hand threaded end and the right-hand threaded end. The ends may be hooks, eyes, jaws or stub ends.
What to Measure
Body length: the length of the central threaded body.
Thread length: how much thread is available at each end.
End fitting size: the opening of the hook or eye, or the pin diameter of a jaw.
Overall length: the full length with both ends fitted.
Open vs Closed Length
Turnbuckles have an open length (ends extended) and a closed length (ends drawn in). When selecting a size, check both: the open length must reach your anchors, and the closed length must give enough adjustment to tension the line.
How to Pick the Right Size
Measure the distance between your two anchor points.
Choose a turnbuckle whose open length covers that distance.
Confirm the end fitting matches your wire rope, shackle or pin.
Check the working load limit against the tension you need.
Leave several threads engaged at each end after tightening.
FAQ
How is turnbuckle size measured?
Turnbuckle size is usually given by the thread diameter and body length, plus the end fitting type. Always check the open and closed lengths as well.
How much thread should be engaged?
As a rule, leave at least one thread diameter engaged at each end, and never let the ends thread past the middle of the body.
Turnbuckles in Every Type
SolidLink manufactures jaw, eye and hook turnbuckles in US, European and JIS types. Browse our turnbuckles or contact us for help choosing.
