Can anyone please suggest me a suitable hand crimp tool for this butt splice?

Molex does not have any particular recommendations for a hand tool for 0191600071, unfortunately. They only list the large applicator and the die associated with the applicator:

192880239 Applicator Die

0638853500 Applicator Tooling

That being said, you might be able to use a generic hand tool. Keep in mind that we generally don’t recommend going with tools not mentioned by the manufacturer. This is only a guide for you to look at options that might work in lieu of the applicator.

Here is a list of hand tools from Molex that might be suitable.

Generic Hand Tools List

Thank you Sir