You need

TT-Electronics-BI 6127V1A60L.5

http://www.digikey.com/product-search/en?mpart=6127V1A60L.5&vendor=987

6127 means that it is wider shaft version

V1 is voltage range, take v1 only, even better would be vO but I couldn't find them.aaa

A60 is angular range, 60 degrees here

L.5 is shaft shape I think.

This is excelent sensor, I installed it in CH joystick and it works without any issues. This is best mod for CH Products, imho, because sensor shape is somewhat simillar to CH potentiometer, and you'll get sensor simillar to one installed in expensive Cougar mods.