The Tip Identification Number (TIN) for all T9 Series tips is 03. A TIN key is avaialble (PN: B2847) for those FM-202 customers that have not turned off the Process Gate on their Hakko FM-202 Soldering Systems.
Note that once the Process Gate is turned off (Reference article at http://www.hakkousa.com/articles/ProcessGateOff.asp) the use of the TIN key is no longer needed.