The giant second row has been consistently excellent for the Dragons over the past few seasons with his all action displays catching the eye of Wayne Pivac.
And Screech, who will join Cardiff Rugby next season, was chomping at the bit to get out on the field against Argentina.
“Words can’t describe the feeling really. It’s an amazing feeling to get out there and finally put on the Welsh jersey,” said the 28-year-old.
“It’s been a long road so to get across the line is a dream come true. I had 30 minutes and I tried to get myself involved and get my hands on the ball as much possible.
“I just want to do my best for the team. It wasn’t to be today, but still it was an amazing experience. It was pretty hot out there, it was probably the hottest game I’ve ever played in so not your typical Welsh weather.”
It was a baptism of fire for Screech with the Wales pack under pressure from the powerful Argentinian eight.
And Screech is determined to add to his one cap by performing consistently well for Cardiff in the United Rugby Championship next season.
“I thought I had a decent season and was a little bit disappointed to not be named in the initial squad but I was delighted to get the call in the end,” he said.
“I’m just happy I’ve finally achieved my dream.
“I’ve had a small taste of it and I’d love to be here more often and show everyone exactly what I can do.”
