Difference in Amphenol C01620H00311010 and C01620H00310010

4POS CONN

What is the difference between Amphenol connectors C01620H00311010 and C01620H00310010? They are just one number off. Does it make a difference?

The difference between these two is the internal strain relief.

C01620H00311010 has a cable clamp with an internal strain relief.

C01620H00310010 has a cable clamp without the internal strain relief.

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