The experienced winger joined United from Scottish side St Mirren following the expiration of his contract there, where he played 13 games, scoring four goals.
He spoke about his move back to English football with iFollow Iron.
“I’m delighted to sign for the club,” said Hammill. “We came close to it in the summer, but I decided to try my hand up in Scotland.
“I really enjoyed it (in Scotland), but it was difficult living away from the family, so that was one of the main reasons why I choose to join Scunthorpe.
“It has come full circle and I am back again, so I am delighted to get the ball rolling and to start at Scunthorpe.”
The 30-year-old, who has played in over 400 games during his career, is available to play for his new club on Saturday, when we take on Coventry City at home.
However, Hammill admitted that the club should be in a higher position in the table and he will be doing all he can to rectify that.
“I’ve only been in the club for an hour and I am going out to train. It is one of optimism, as we will be looking to push up the table,” explained Hammill.
“We should be a lot higher and we know that. I am sure with the players we are looking to bring in, we will achieve that.
“I have been in this predicament before when I joined Barnsley. They were bottom of the league when I joined in November and we ended up going on a promotion run.
“I’m looking to help the team achieve what they want to do. The objective this year is to finish as high as possible.”
Hammill, who has vast experience at this level and higher with the likes of Barnsley, Huddersfield, Wolves and Middlesbrough, is hoping he can be in and around the goals whilst at Scunthorpe.
Throughout his career, he has been a threat from midfield with 40 goals and he is now eager to excite the Iron fans.
He said: “I am a player that gives it my all and one that likes to score or create a goal.
“I’m labelled as a maverick type of player, but I don’t shy away from the hard work. I’m looking to entertain the fans."
Predominantly a winger, Hamill can also play in a couple of positions.
“I’m happy to do any role for the team,” said Hammill. “I played centre forward this season as a number nine, a position which I have never really played in before.
“I can play on the left or right wing and even in central midfield.
“I am quite versatile and I don’t really care where I am playing. I will give my all for the shirt.”
He added: “I’m aiming to play as many minutes, score as many goals and get as many assists to help the team for the remainder of the season in pushing up the table.”
See much more Adam Hammill on iFollow Iron. Click here to sign up.