Graham Alexander says the players believe they can snatch the final League One play off spot on Sunday.
They travel to Bramhall Lane at lunchtime on the back of five straight wins and sit just outside the play offs on goal difference, level on points with Barnsley.
“The belief is there that we can do it and I don’t think you put together five wins on the bounce if you don’t believe,” the Iron chief told the Scunthorpe Telegraph.
“We looked to be out the picture but we had a belief that we could achieve and I think the results have born that out.
“After the Bradford game when we were 10 points adrift we talked about the pride of the last six games and finishing the season in a positive fashion.
“Whatever happens we have done that but we want to take it that little bit further.”
The Iron will be roared on by around 3,000 fans in South Yorkshire and the Scunthorpe boss believes the town has responded to the club’s recent form.
“We gave the supporters a taste of what can be the good times here and the players can see the response of the Scunthorpe public.
“If you get the ball rolling they will come back and we can become a very strong force together and hopefully we can continue that for one more game.”
“The fans can create a force and it helped the boys in the second half on Saturday. We will need every single one of them at Bramall Lane because it will be a big crowd and we need to make sure we are counted as well”.
Barnsley, who currently occupy the 6th spot, face a tough trip to Wigan who will be crowned champions at the DW Stadium this weekend.
Gillingham are the only other side with a chance of making the play offs. If Scunthorpe and Barnsley fail to win, they can take the final place with a home win over play off certainties Millwall.