Are salaried managers (who's pay is based on a 50 hour week) who is told to clock in, entitled to overtime after 50 hours?

Assuming that by salaried you mean exempt, no, they are not. There are NO circumstances in which an exempt employee is entitled to overtime. Contrary to popular belief, there is nothing in the law which makes it illegal for an exempt employee to clock in and out, and there can be many good and valid reasons for them to do so. It does NOT automatically make you non-exempt.

What qualify's you as non-exempt or exempt? For instance if you are a partner in the business what would this be?

A partner in the business would most likely be exempt. But it is the job duties, not the job title, that makes the determination.

Thank you for your help. I do appericiate it. I think if you are salary and work a position along with supervising a crew and or doing paper work this qualifys right. :o

http://www.dol.gov/esa/regs/compliance/whd/fairpay/fs17a_overview.htm

Check specifically, the Executive and Administrative exemptions.