I'm thinking about installing a Shimano FC-M410 square-taper crankset onto an old miyata triplecross frame. According to shimano's manuals, I need a BB-UN26 / UN26 (-E) bottom bracket that's 113 mm wide.

The thing is, websites don't seem to differentiate between the blank, E-type, and K-type bottom brackets. Should I be worried? What exactly is the difference between these BB's? Will a K-type work?