Choosing Cable Tie Length Made Easy - The One Rule You Need to Know

Choosing the correct length of a cable tie can be at times confusing, as there are dozens of different lengths to choose from, and typically manufacturers and cable tie suppliers only advise you of the "absolute maximum bundle diameter" that the cable ties are suitable for. But just because there is an absolute maximum bundle diameter for a cable tie, it doesn't make this a practical and convenient recommendation for day-to-day use.

Additionally, as you begin to tighten the cable tie, the shape of the ties resembles more of a 'teardrop' shape, rather than being a perfect round circle - and the extent of this effect also depends on the thickness of the cable ties or how stiff the cable ties are. This means that theoretical bundle diameters that are measured in perfect round shapes, are even less helpful in practice.

To make things worse, the maximum bundle diameter can also vary between different types of cable ties, and there isn't a consistent answer that is helpful in practice. Therefore, we would like to present you with a simple rule to always ensure you have a cable tie that is long enough for your use, and also convenient for you to use.

The One Rule You Need to Know

So, what is the rule to find out the minimum length of a cable tie you require? It is simple: Simply take the thickness or diameter of the bundle need to tie, and multiply this by five.

By ensuring that your cable tie is at least five times the length of the diameter required, will ensure that you have long enough of a cable tie that is also practical and convenient to use.

Here are some examples:

Diameter / Thickness Minimum Length Recommended Length
10 mm 50 mm 80 mm
15 mm 75 mm 80 mm
20 mm 100 mm 100 mm
25 mm 125 mm 140 mm
30 mm 150 mm 150 - 160 mm
35 mm 175 mm 200 mm
40 mm 200 mm 200 mm
45 mm 225 mm 250 mm
50 mm 250 mm 250 mm
55 mm 275 mm 300 mm
60 mm 300 mm 300 mm


Finally, to make things even easier and to ensure you always have a cable tie at hand that is the perfect length (for cable bundles up to 74 mm in diameter); you could always order one of our handy cable tie assortments that have the most popular sizes included.

Still need help? Get in touch and we're happy to help!

If you require further assistance in choosing the perfect cable tie for your use, please don't hesitate to get in touch by sending us an email at: sales@cableties.co.uk

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