init. A rating of 5 on the Fujita scale
F5, F.V, F 5, F05 or F-5 may refer to:
F5 is a heavy metal band based out of Phoenix, Arizona which features Megadeth bassist Dave Ellefson and ex-Megadeth drummer Jimmy DeGrasso.
F5, also SP5, is a wheelchair sport classification that corresponds to the neurological level T8 - L1. Historically, it was known as Lower 3, or Upper 4. People in this class have some trunk function and good sitting balance. They have problems with hip function, that reduces their ability to rotate their spines.
The comparable class for athletics is F55. F5 competitors can be found in a number of swimming classes including SB3, S4, SB4, SB5, S5 and S6. People in this class would likely be a 2 point player in wheelchair basketball. In rowing, they would be classified as AS. The process for classification into this class has a medical and functional classification process. This process is often sport specific.