The company that manufacturer's that exact connector is called Keystone Electronics. Their distribution network includes the big distributors such as Digikey.
Go
here to find the web page with the part you are looking for, it is the exact one you specifiy above. On that page there is a request samples link. If I were you, I would just say you are a Engineering student looking for parts for your senior project, that way you may be able to avoid the follow up emails, catalogs, etc, if you don't want that stuff.